DNS 服务器选择
重要的事情写到前面，因为现在是快餐文化，快餐阅读，没有人愿意静下心研究和和阅读了。
本文主要介绍了一些DNS的测试速度，不介意直接拿去使用，如需使用还需要自己测试才行，就算我们找到了最快的，那也只代表域名解析快而已，DNS有没有被污染，有没有被劫持依然要靠实际使用才知道。
网上很多人说几十毫秒的差距根本感觉不出来，无需纠结。说的也没错，如果一次解析就能直接访问到网站，的确是无需纠结。但现在很多网址都是重定向的，连续跳转十几次的都有，也就是说我们访问网址需要十几次域名解析才能访问到真正的网址，这样耗时就指数增长了，所以我需要找两个最快最稳定的。
DNS 就是域名解析服务，说简单点就是将域名翻译为IP地址，为快速的域名解析能加快我们上午速度，和我们所处的城市位置、我们当前使用的运营商高度相关
关于DNS，网上有太多的评测和文章以及问答，但真正用起来，并不如官方宣传的那么好，而且信息时代，一切变化都是很快的，前几年好用，这几年不一定好用，国外人评论好，国内不一定好用，这个省份用着好，另一个省份也许就糟糕了，其中的道理大家都懂。是骡子是马，咱拉出来溜溜
================== 最后更新时间 2018 年 11 月 22 日 ==================
先表明测试环境
地址：中国
网络：深圳电信
测试时间：2018年11月21日 上午 9点30分
测试目的：找两个最快的DNS自己用，顺便记录下已知的公共DNS用于以后更换
被测试DNS概况：没有测试各个运营商的DNS
测试方法：通过ping 检测DNS服务器和我的电脑通信之间耗时简单评估一遍，文末使用专业工具在测试一遍，然后附上测试导出的表格截图
1.百度公共DNS 180.76.76.76
大概是2014年12月，百度宣布推出公共DNS：180.76.76.76 https://dudns.baidu.com/intro/publicdns/
180.76.76.76 的 Ping 统计信息:
数据包: 已发送 = 83，已接收 = 83，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 5ms，最长 = 41ms，平均 = 8ms
从百度这张图就可以看出，DNS服务器质量也是不错的，测试中表现优秀，而且一直很稳定，虽然不喜欢李彦宏，但这DNS服务器做的非常好，值得点赞。
在深圳电信网络环境下的测试结果，请看文末的截图
2.阿里公共DNS 223.5.5.5 和 223.6.6.6
2014-06-06 阿里公共DNS正式上线了 http://alidns.com/
服务IP：223.5.5.5 223.6.6.6
阿里DNS官网这张图真的是丑啊，不符合阿里大企业的形象
223.5.5.5 的 Ping 统计信息:
数据包: 已发送 = 55，已接收 = 41，丢失 = 14 (25% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 21ms，最长 = 80ms，平均 = 38ms
223.6.6.6 的 Ping 统计信息:
数据包: 已发送 = 85，已接收 = 79，丢失 = 6 (7% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 10ms，最长 = 59ms，平均 = 27ms
阿里虽然速度与百度相当，但是在我的网络环境下丢包太严重，也许杭州的小伙伴使用阿里的DNS会快的飞起
在深圳电信网络环境下的测试结果，请看文末的截图
3.Public DNS+ 119.29.29.29
Public DNS+是DNSPod推出的公共域名解析服务，服务IP为119.29.29.29 https://www.dnspod.cn/Products/Public.DNS
DNSPOD 的公共 DNS 是在腾讯全资收购后推出的，晚上也有人叫做腾讯公共DNS，但收购后依然以独立品牌运营，所以官网官网看不到腾讯的影子，这点为马化腾点赞吧，虽然不喜欢这个社交和游戏佬
119.29.29.29 的 Ping 统计信息:
数据包: 已发送 = 439，已接收 = 439，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 6ms，最长 = 37ms，平均 = 7ms
与其漂亮的网站一样，测试表现不错，丢包基本没有
在深圳电信网络环境下的测试结果，请看文末的截图
------- 说完BAT，我们就说说全球大型的 ------------
4. google DNS 8.8.8.8 和 8.8.4.4 https://developers.google.com/speed/public-dns/
支持 DNSSEC Authentication
8.8.8.8 的 Ping 统计信息:
数据包: 已发送 = 23，已接收 = 23，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 22ms，最长 = 25ms，平均 = 23ms
8.8.4.4 的 Ping 统计信息:
数据包: 已发送 = 50，已接收 = 50，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 10ms，最长 = 12ms，平均 = 10ms
测试中表现也很不错，但是 8.8.4.4 的解析速度竟然比 8.8.8.8 的快，有可能是大家都安照主备顺序设置，导致主DNS压力很大，反而备用DNS速度更快了
在深圳电信网络环境下的测试结果，请看文末的截图
5.IBM DNS 9.9.9.9 和 149.112.112.112 https://www.quad9.net/
支持 DNSSEC Authentication
9.9.9.9 的 Ping 统计信息:
数据包: 已发送 = 193，已接收 = 189，丢失 = 4 (2% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 177ms，最长 = 208ms，平均 = 182ms
149.112.112.112 的 Ping 统计信息:
数据包: 已发送 = 131，已接收 = 130，丢失 = 1 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 158ms，最长 = 203ms，平均 = 177ms
基本属于垫底类型。也和官方网站介绍的基本吻合，并不是IBM官方建设的DNS服务器，而是其他几个公司合作的，IBM可能提供了帮助而已
在深圳电信网络环境下的测试结果，请看文末的截图
6.open DNS 208.67.222.222 和 208.67.220.220 https://www.opendns.com/
208.67.222.222 的 Ping 统计信息:
数据包: 已发送 = 108，已接收 = 108，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 99ms，最长 = 115ms，平均 = 109ms
208.67.220.220 的 Ping 统计信息:
数据包: 已发送 = 80，已接收 = 74，丢失 = 6 (7% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 109ms，最长 = 155ms，平均 = 136ms
基本属于垫底类型
在深圳电信网络环境下的测试结果，请看文末的截图
--------------- 说完全球大型的，再说说国内的 ------------
7.SDNS 1.2.4.8 和 210.2.4.8 http://public.sdns.cn/index.shtml
SDNS递归云解析服务是中国互联网络信息中心（CNNIC）推出的免费的公共解析服务产品。旨在为用户提供快速、安全、绿色的上网接入解析服务。SDNS递归云解析所提供的服务可以增加浏览网站的速度
看网站页面就不给力，实际使用应该也是不给力，中国互联网络信息中心（CNNIC）推出的，反正我是不会用的，仅仅测试下速度
1.2.4.8 的 Ping 统计信息:
数据包: 已发送 = 223，已接收 = 164，丢失 = 59 (26% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 28ms，最长 = 33ms，平均 = 29ms
210.2.4.8 的 Ping 统计信息:
数据包: 已发送 = 450，已接收 = 450，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 34ms，最长 = 48ms，平均 = 37ms
1.2.4.8 测试中返回了无效的回复，果然是差评
官网解释大概就是说有些网址别的DNS服务器都可以正常解析，但是当前DNS却不能正常解析，那么他会标记出来。说白了，就是屏蔽了某些网址不让用户访问，果然是我大天国啊
不出所料，同样是垫底类型
在深圳电信网络环境下的测试结果，请看文末的截图
8.114DNS https://www.114dns.com/
不愧是老牌啊，提供了三种DNS供用户选择：
纯净 无劫持 无需再忍受被强扭去看广告或粗俗网站之痛苦
服务地址为：114.114.114.114 和 114.114.115.115
拦截 钓鱼病毒木马网站 增强网银、证券、购物、游戏、隐私信息安全
服务地址为：114.114.114.119 和 114.114.115.119
学校或家长可选拦截 色情网站 保护少年儿童免受网络色情内容的毒害
服务地址为：114.114.114.110 和 114.114.115.110
我只测试纯净无劫持的
114.114.114.114 的 Ping 统计信息:
数据包: 已发送 = 270，已接收 = 270，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 23ms，最长 = 30ms，平均 = 24ms
114.114.115.115 的 Ping 统计信息:
数据包: 已发送 = 264，已接收 = 264，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 21ms，最长 = 30ms，平均 = 21ms
虽然有少量丢包，但表现也是不错的，排名仅次于谷歌，六个DNS排名完全靠在一起，表现非常均衡，而且没有大型企业的背景，做了这么多年，可以说是很不容易了，而且有专门的DNS拦截钓鱼网站和色情网站，良心的做为啊，家长和学校的首选
在深圳电信网络环境下的测试结果，请看文末的截图
9. DNS 派 http://www.dnspai.com/
DNS派跟运行商、政府、一线互联网厂商进行合作，能有效的屏蔽色情网站、钓鱼网站，让你和家人的上网环境更加干净。
DNS派能有效拦截域名劫持，让您的访问不会被劫持到广告网站和粗俗网站
看网站风格和元素应该是 360 旗下，或者获得360投资的
电信、移动、铁通：首选地址：101.226.4.6，备用地址：218.30.118.6
联通：首选地址：123.125.81.6，备用地址：140.207.198.6
我的是电信，所以仅仅测试含电信的这一组
101.226.4.6 的 Ping 统计信息:
数据包: 已发送 = 102，已接收 = 102，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 28ms，最长 = 53ms，平均 = 31ms
218.30.118.6 的 Ping 统计信息:
数据包: 已发送 = 93，已接收 = 93，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 33ms，最长 = 52ms，平均 = 36ms
四个DNS排名几乎靠在一起，性能还可以，123.125.81.6丢包严重，整体速度比114dns 慢了一些，
在深圳电信网络环境下的测试结果，请看文末的截图
10. PdoMo-DNS 101.132.183.99 和 193.112.15.186 https://pdomo.me/
101.132.183.99 的 Ping 统计信息:
数据包: 已发送 = 383，已接收 = 383，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 31ms，最长 = 42ms，平均 = 32ms
193.112.15.186 的 Ping 统计信息:
数据包: 已发送 = 378，已接收 = 378，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 6ms，最长 = 23ms，平均 = 7ms
这两个DNS速度差距很大， 193.112.15.186 的速度仅仅次于百度阿里，但有丢包； 101.132.183.99 比DNS派慢了一些，但基本没有丢包，服务器质量也算可以
在深圳电信网络环境下的测试结果，请看文末的截图
11. ONE DNS 117.50.11.11 和 117.50.22.22 https://www.onedns.net/
117.50.11.11 的 Ping 统计信息:
数据包: 已发送 = 184，已接收 = 184，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 37ms，最长 = 40ms，平均 = 37ms
117.50.22.22 的 Ping 统计信息:
数据包: 已发送 = 173，已接收 = 173，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 39ms，最长 = 44ms，平均 = 40ms
其中 117.50.22.22 在深圳电信环境中 不能正常解析
官网的解释大概就是说这个DNS在当前环境是不能使用的，也许他在别的地方可以正常解析
这两个DNS其中一个还算可以
在深圳电信网络环境下的测试结果，请看文末的截图
12. cloudxns https://www.cloudxns.net/
这个貌似是收费的，没有提供公共DNS，但页面有几个关于DNS的小工具，所以也收藏下
13.HI!XNS 40.73.101.101 https://hixns.com/
虽然网站页面是极简风格，但是这个DNS 应该是没有开通ping 功能，ping 包没有回复,但不代表服务器的解析速度慢
40.73.101.101 的 Ping 统计信息:
数据包: 已发送 = 28，已接收 = 0，丢失 = 28 (100% 丢失)，
这个DNS也算可以，有轻微丢包
在深圳电信网络环境下的测试结果，请看文末的截图
15. DNS测试工具
必须要一个高端大气上档次的：
Dns benchmark 官网 https://www.grc.com/dns/benchmark.htm
首先把软件内部已经收集到的 4849 个DNS全部扫描一遍，会自动留下最快的50个：
在50个DNS当中去掉无效的，再增加上文列出所有的DNS，再测试一遍，依然是 深圳电信环境测试，结果如下：
Final benchmark results, sorted by nameserver performance: (average cached name retrieval speed, fastest to slowest) 202. 96.134.133 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.001 | 0.001 | 0.002 | 0.000 | 100.0 | - Uncached Name | 0.008 | 0.079 | 0.444 | 0.092 | 100.0 | - DotCom Lookup | 0.042 | 0.106 | 0.218 | 0.064 | 98.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns.szptt.net.cn CHINANET-BACKBONE No.31,Jin-rong Street, CN 202. 96.128.166 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.004 | 0.004 | 0.005 | 0.000 | 100.0 | - Uncached Name | 0.008 | 0.081 | 0.337 | 0.090 | 95.9 | - DotCom Lookup | 0.040 | 0.064 | 0.194 | 0.037 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ cache-b.guangzhou.gd.cn CHINANET-BACKBONE No.31,Jin-rong Street, CN 202. 96.128. 86 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.004 | 0.005 | 0.006 | 0.000 | 100.0 | - Uncached Name | 0.007 | 0.074 | 0.317 | 0.084 | 100.0 | - DotCom Lookup | 0.040 | 0.088 | 0.230 | 0.061 | 98.0 | ---<-------->---+-------+-------+-------+-------+-------+ cache-a.guangzhou.gd.cn CHINANET-BACKBONE No.31,Jin-rong Street, CN 125. 88.152.241 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ + Cached Name | 0.005 | 0.006 | 0.007 | 0.000 | 100.0 | + Uncached Name | 0.007 | 0.081 | 0.273 | 0.083 | 100.0 | + DotCom Lookup | 0.044 | 0.086 | 0.264 | 0.064 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? CT-FOSHAN-IDC CHINANET Guangdong province network, CN 180. 76. 76. 76 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ + Cached Name | 0.005 | 0.006 | 0.007 | 0.000 | 100.0 | + Uncached Name | 0.010 | 0.088 | 0.295 | 0.083 | 100.0 | + DotCom Lookup | 0.043 | 0.110 | 0.352 | 0.081 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ public-dns-a.baidu.com CNNIC-BAIDU-AP Beijing Baidu Netcom Science and Technolog 223. 6. 6. 6 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.006 | 0.007 | 0.008 | 0.000 | 98.0 | - Uncached Name | 0.036 | 0.102 | 0.289 | 0.073 | 100.0 | - DotCom Lookup | 0.048 | 0.064 | 0.244 | 0.028 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ public2.alidns.com CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co., 223. 5. 5. 5 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.006 | 0.007 | 0.009 | 0.001 | 100.0 | - Uncached Name | 0.032 | 0.103 | 0.300 | 0.077 | 98.0 | - DotCom Lookup | 0.049 | 0.060 | 0.106 | 0.009 | 97.9 | ---<-------->---+-------+-------+-------+-------+-------+ public1.alidns.com CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co., 8. 8. 4. 4 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.004 | 0.008 | 0.014 | 0.002 | 100.0 | - Uncached Name | 0.004 | 0.071 | 0.282 | 0.077 | 98.0 | - DotCom Lookup | 0.152 | 0.178 | 0.207 | 0.017 | 95.8 | ---<-------->---+-------+-------+-------+-------+-------+ google-public-dns-b.google.com GOOGLE - Google LLC, US 202.130. 97. 65 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.004 | 0.009 | 0.013 | 0.003 | 100.0 | - Uncached Name | 0.004 | 0.051 | 0.257 | 0.067 | 100.0 | - DotCom Lookup | 0.048 | 0.056 | 0.074 | 0.007 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns1.wharfttidc.com WTT-AS-AP WTT HK Limited, HK 202. 45. 84. 59 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.004 | 0.009 | 0.013 | 0.003 | 100.0 | - Uncached Name | 0.004 | 0.059 | 0.233 | 0.069 | 100.0 | - DotCom Lookup | 0.107 | 0.152 | 0.165 | 0.019 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns04.hutchcity.com HUTCHISON-AS-AP HGC Global Communications Limited, HK 210. 0.255.251 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.003 | 0.009 | 0.012 | 0.003 | 100.0 | - Uncached Name | 0.004 | 0.076 | 0.231 | 0.083 | 98.0 | - DotCom Lookup | 0.108 | 0.153 | 0.163 | 0.017 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ bbdns2.on-nets.com HUTCHISON-AS-AP HGC Global Communications Limited, HK 202. 45. 84. 58 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.004 | 0.010 | 0.013 | 0.003 | 100.0 | - Uncached Name | 0.004 | 0.059 | 0.237 | 0.073 | 100.0 | - DotCom Lookup | 0.112 | 0.175 | 0.216 | 0.027 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns.hutchcity.com HUTCHISON-AS-AP HGC Global Communications Limited, HK 210. 0.255.250 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.005 | 0.010 | 0.012 | 0.002 | 100.0 | - Uncached Name | 0.005 | 0.067 | 0.234 | 0.070 | 100.0 | - DotCom Lookup | 0.107 | 0.153 | 0.163 | 0.017 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ bbdns1.on-nets.com HUTCHISON-AS-AP HGC Global Communications Limited, HK 202.181.224. 2 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.006 | 0.011 | 0.016 | 0.003 | 100.0 | - Uncached Name | 0.006 | 0.044 | 0.199 | 0.058 | 100.0 | - DotCom Lookup | 0.066 | 0.149 | 0.867 | 0.163 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns1.hkcix.com HKCIX-AS-AP HongKong Commercial Internet Exchange, HK 202.180.160. 1 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.005 | 0.016 | 0.087 | 0.017 | 100.0 | - Uncached Name | 0.005 | 0.060 | 0.340 | 0.081 | 100.0 | - DotCom Lookup | 0.012 | 0.126 | 0.278 | 0.107 | 93.5 | ---<-------->---+-------+-------+-------+-------+-------+ ns7.imsbiz.com ERX-STAR HKT Limited, HK 8. 8. 8. 8 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.003 | 0.016 | 0.036 | 0.009 | 100.0 | - Uncached Name | 0.003 | 0.074 | 0.346 | 0.091 | 100.0 | - DotCom Lookup | 0.074 | 0.176 | 0.206 | 0.026 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ google-public-dns-a.google.com GOOGLE - Google LLC, US 119. 29. 29. 29 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.014 | 0.016 | 0.020 | 0.001 | 100.0 | - Uncached Name | 0.025 | 0.149 | 0.429 | 0.105 | 100.0 | - DotCom Lookup | 0.057 | 0.138 | 0.297 | 0.075 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? CNNIC-TENCENT-NET-AP Shenzhen Tencent Computer Systems Co 139.175.252. 16 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.005 | 0.020 | 0.029 | 0.010 | 100.0 | - Uncached Name | 0.005 | 0.072 | 0.234 | 0.073 | 100.0 | - DotCom Lookup | 0.047 | 0.074 | 0.257 | 0.060 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns1.seed.net.tw SEEDNET Digital United Inc., TW 202. 98.192. 67 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.021 | 0.021 | 0.024 | 0.001 | 100.0 | - Uncached Name | 0.039 | 1.534 | 5.023 | 2.090 | 100.0 | - DotCom Lookup | 0.080 | 1.406 | 5.022 | 1.947 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns.gy.gz.cn CHINANET-BACKBONE No.31,Jin-rong Street, CN 114.114.114.110 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.021 | 0.022 | 0.023 | 0.001 | 98.0 | - Uncached Name | 0.078 | 0.135 | 0.292 | 0.063 | 100.0 | - DotCom Lookup | 0.114 | 0.136 | 0.153 | 0.010 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ protect-children-1.114dns.com COGENT-174 - Cogent Communications, US 220.248.192. 13 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.023 | 0.023 | 0.024 | 0.000 | 100.0 | - Uncached Name | 0.037 | 0.123 | 0.401 | 0.101 | 98.0 | - DotCom Lookup | 0.056 | 0.074 | 0.121 | 0.022 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns4.jxnc.cncnet.net CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN 220.248.192. 12 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.023 | 0.024 | 0.026 | 0.001 | 100.0 | - Uncached Name | 0.037 | 0.121 | 0.362 | 0.095 | 98.0 | - DotCom Lookup | 0.056 | 0.081 | 0.122 | 0.025 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns3.jxnc.cncnet.net CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN 114.114.114.114 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.023 | 0.024 | 0.025 | 0.000 | 100.0 | - Uncached Name | 0.080 | 0.140 | 0.306 | 0.067 | 100.0 | - DotCom Lookup | 0.114 | 0.134 | 0.150 | 0.009 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ public1.114dns.com COGENT-174 - Cogent Communications, US 114.114.115.110 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.023 | 0.024 | 0.024 | 0.000 | 98.0 | - Uncached Name | 0.081 | 0.143 | 0.302 | 0.068 | 100.0 | - DotCom Lookup | 0.120 | 0.138 | 0.157 | 0.009 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ protect-children-2.114dns.com COGENT-174 - Cogent Communications, US 114.114.115.115 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.023 | 0.024 | 0.025 | 0.001 | 100.0 | - Uncached Name | 0.079 | 0.166 | 0.566 | 0.116 | 100.0 | - DotCom Lookup | 0.117 | 0.139 | 0.162 | 0.012 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ public2.114dns.com COGENT-174 - Cogent Communications, US 114.114.115.119 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.024 | 0.025 | 0.026 | 0.000 | 100.0 | - Uncached Name | 0.080 | 0.142 | 0.263 | 0.064 | 100.0 | - DotCom Lookup | 0.116 | 0.141 | 0.166 | 0.011 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ anti-malware-2.114dns.com COGENT-174 - Cogent Communications, US 114.114.114.119 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.024 | 0.025 | 0.027 | 0.001 | 100.0 | - Uncached Name | 0.084 | 0.148 | 0.466 | 0.082 | 100.0 | - DotCom Lookup | 0.117 | 0.139 | 0.154 | 0.009 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ anti-malware-1.114dns.com COGENT-174 - Cogent Communications, US 1. 2. 4. 8 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.025 | 0.026 | 0.027 | 0.001 | 95.8 | - Uncached Name | 0.027 | 0.119 | 0.494 | 0.116 | 95.7 | - DotCom Lookup | 0.051 | 0.056 | 0.069 | 0.003 | 97.7 | ---<-------->---+-------+-------+-------+-------+-------+ public1.sdns.cn CNNIC-CRITICAL-AP China Internet Network Infomation Cente 40. 73.101.101 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.027 | 0.028 | 0.030 | 0.000 | 100.0 | - Uncached Name | 0.094 | 0.185 | 0.551 | 0.105 | 100.0 | - DotCom Lookup | 0.125 | 0.191 | 0.318 | 0.075 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? BLUECLOUD Shanghai Blue Cloud Technology Co.,Ltd, CN 101.226. 4. 6 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.028 | 0.029 | 0.032 | 0.001 | 97.9 | - Uncached Name | 0.100 | 0.190 | 0.438 | 0.097 | 95.7 | - DotCom Lookup | 0.134 | 0.194 | 0.319 | 0.074 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dnspai-public-dns.dnspai.com CHINANET-SH-AP China Telecom (Group), CN 210. 22. 70. 3 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.030 | 0.031 | 0.033 | 0.001 | 100.0 | - Uncached Name | 0.030 | 0.031 | 0.033 | 0.001 | 100.0 | - DotCom Lookup | 0.030 | 0.031 | 0.033 | 0.001 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ca1.sh.cncnet.net CNCGROUP-SH China Unicom Shanghai network, CN 210. 22. 84. 3 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.030 | 0.031 | 0.033 | 0.001 | 100.0 | - Uncached Name | 0.030 | 0.032 | 0.033 | 0.001 | 100.0 | - DotCom Lookup | 0.030 | 0.031 | 0.033 | 0.001 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ca2.sh.cncnet.net CNCGROUP-SH China Unicom Shanghai network, CN 140.207.198. 6 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.030 | 0.031 | 0.032 | 0.000 | 98.0 | - Uncached Name | 0.092 | 0.173 | 0.357 | 0.083 | 100.0 | - DotCom Lookup | 0.127 | 0.224 | 0.315 | 0.080 | 97.9 | ---<-------->---+-------+-------+-------+-------+-------+ dnspai-public-dns.dnspai.com CNCGROUP-SH China Unicom Shanghai network, CN 210. 34. 48. 34 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.021 | 0.032 | 0.141 | 0.016 | 100.0 | - Uncached Name | 0.060 | 0.176 | 0.359 | 0.097 | 97.9 | - DotCom Lookup | 0.233 | 0.304 | 1.066 | 0.168 | 93.5 | ---<-------->---+-------+-------+-------+-------+-------+ dns.fzu.edu.cn ERX-CERNET-BKB China Education and Research Network Cente 101.132.183. 99 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.031 | 0.032 | 0.034 | 0.001 | 100.0 | - Uncached Name | 0.076 | 0.184 | 0.465 | 0.106 | 100.0 | - DotCom Lookup | 0.100 | 0.236 | 0.365 | 0.040 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co., 159.226. 8. 6 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.033 | 0.034 | 0.036 | 0.000 | 100.0 | - Uncached Name | 0.035 | 0.084 | 0.282 | 0.066 | 100.0 | - DotCom Lookup | 0.034 | 0.047 | 0.074 | 0.016 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns.cstnet.cn CSTNET-AS-AP Computer Network Information Center, CN 218. 30. 26. 68 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.033 | 0.034 | 0.040 | 0.001 | 100.0 | - Uncached Name | 0.035 | 0.101 | 0.251 | 0.072 | 98.0 | - DotCom Lookup | 0.037 | 0.098 | 0.352 | 0.109 | 97.9 | ---<-------->---+-------+-------+-------+-------+-------+ idc-ns1.bjtelecom.net CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporat 210. 5. 4.116 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.033 | 0.034 | 0.038 | 0.001 | 100.0 | - Uncached Name | 0.036 | 0.155 | 0.852 | 0.142 | 100.0 | - DotCom Lookup | 0.069 | 0.071 | 0.074 | 0.001 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns1.cibonet.com CHINAENTERCOM China Enterprise Communications Ltd., CN 117. 50. 11. 11 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.035 | 0.035 | 0.037 | 0.000 | 100.0 | - Uncached Name | 0.077 | 0.192 | 0.482 | 0.123 | 100.0 | - DotCom Lookup | 0.129 | 0.377 | 1.608 | 0.378 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? CHINA169-BJ China Unicom Beijing Province Network, CN 202. 38.128. 58 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.034 | 0.035 | 0.036 | 0.000 | 100.0 | - Uncached Name | 0.038 | 0.421 | 1.304 | 0.537 | 100.0 | - DotCom Lookup | 0.037 | 0.153 | 1.239 | 0.339 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns.ihep.ac.cn CSTNET-AS-AP Computer Network Information Center, CN 211.157. 15.189 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.035 | 0.036 | 0.042 | 0.001 | 100.0 | - Uncached Name | 0.037 | 0.122 | 0.553 | 0.109 | 100.0 | - DotCom Lookup | 0.037 | 0.040 | 0.058 | 0.003 | 97.9 | ---<-------->---+-------+-------+-------+-------+-------+ dns1.apcix.com.cn CNNIC-CNLINKNET-AP CNLink Networks Ltd., CN 219.150. 32.132 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.035 | 0.036 | 0.040 | 0.001 | 100.0 | - Uncached Name | 0.040 | 0.123 | 0.393 | 0.094 | 100.0 | - DotCom Lookup | 0.041 | 0.058 | 0.265 | 0.053 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ cache.ctnt.com.cn CHINATELECOM-TJ-AS-AP ASN for TIANJIN Provincial Net of C 211.166. 0.166 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.035 | 0.036 | 0.037 | 0.000 | 100.0 | - Uncached Name | 0.038 | 0.138 | 0.349 | 0.098 | 100.0 | - DotCom Lookup | 0.039 | 0.120 | 0.271 | 0.057 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? UNSPECIFIED BEIJING SHENZHOU GREATWALL COMMUNICATION, CN 218. 30.118. 6 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.035 | 0.036 | 0.038 | 0.001 | 100.0 | - Uncached Name | 0.082 | 0.147 | 0.311 | 0.073 | 100.0 | - DotCom Lookup | 0.117 | 0.206 | 0.302 | 0.079 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporat 61. 63. 0. 66 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.028 | 0.037 | 0.042 | 0.005 | 100.0 | - Uncached Name | 0.028 | 0.099 | 0.420 | 0.095 | 100.0 | - DotCom Lookup | 0.086 | 0.136 | 0.195 | 0.044 | 98.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns1.kbtelecom.net.tw KBT Koos Broadband Telecom, TW 210. 73. 64. 1 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.036 | 0.037 | 0.037 | 0.000 | 100.0 | - Uncached Name | 0.039 | 0.136 | 0.323 | 0.085 | 100.0 | - DotCom Lookup | 0.041 | 0.111 | 0.294 | 0.082 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns1.cpip.net.cn CAPNET-AS-AP Beijing Capital Public Information Platform, 123.125. 81. 6 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.036 | 0.037 | 0.039 | 0.001 | 100.0 | - Uncached Name | 0.074 | 0.143 | 0.327 | 0.074 | 100.0 | - DotCom Lookup | 0.117 | 0.192 | 0.313 | 0.080 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dnspai-public-dns.dnspai.com CHINA169-BJ China Unicom Beijing Province Network, CN 218. 30. 26. 70 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.037 | 0.038 | 0.039 | 0.001 | 100.0 | - Uncached Name | 0.039 | 0.109 | 0.270 | 0.073 | 98.0 | - DotCom Lookup | 0.040 | 0.124 | 0.352 | 0.111 | 97.9 | ---<-------->---+-------+-------+-------+-------+-------+ idc-ns2.bjtelecom.net CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporat 210. 73. 88. 1 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.038 | 0.038 | 0.042 | 0.000 | 100.0 | - Uncached Name | 0.040 | 0.135 | 0.297 | 0.078 | 100.0 | - DotCom Lookup | 0.045 | 0.122 | 0.298 | 0.092 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns2.cpip.net.cn CAPNET-AS-AP Beijing Capital Public Information Platform, 156.154. 71. 1 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.035 | 0.038 | 0.068 | 0.005 | 95.3 | - Uncached Name | 0.039 | 0.355 | 1.734 | 0.463 | 100.0 | - DotCom Lookup | 0.039 | 0.043 | 0.052 | 0.003 | 97.6 | ---<-------->---+-------+-------+-------+-------+-------+ rdns2.ultradns.net ULTRADNS - NeuStar, Inc., US 156.154. 70. 1 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.037 | 0.038 | 0.050 | 0.002 | 100.0 | - Uncached Name | 0.040 | 0.367 | 2.449 | 0.558 | 97.7 | - DotCom Lookup | 0.041 | 0.050 | 0.149 | 0.023 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ rdns1.ultradns.net ULTRADNS - NeuStar, Inc., US 222. 46.120. 5 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.038 | 0.040 | 0.041 | 0.001 | 100.0 | - Uncached Name | 0.071 | 0.214 | 1.005 | 0.158 | 100.0 | - DotCom Lookup | 0.111 | 0.225 | 0.313 | 0.075 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns1.zjtietong.com CTTNET China TieTong Telecommunications Corporation, CN 210. 2. 4. 8 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.039 | 0.040 | 0.041 | 0.001 | 100.0 | - Uncached Name | 0.049 | 0.800 | 1.594 | 0.359 | 100.0 | - DotCom Lookup | 0.130 | 1.126 | 2.114 | 0.557 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? CNNIC-CRITICAL-AP China Internet Network Infomation Cente 203.240.193. 11 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.005 | 0.043 | 0.063 | 0.026 | 95.9 | - Uncached Name | 0.005 | 0.098 | 0.342 | 0.089 | 97.9 | - DotCom Lookup | 0.063 | 0.095 | 0.507 | 0.100 | 97.8 | ---<-------->---+-------+-------+-------+-------+-------+ ns2.shinbiro.com HYUNDAI-KR Shinbiro, KR 202.100.138. 68 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.044 | 0.044 | 0.045 | 0.000 | 100.0 | - Uncached Name | 0.074 | 0.157 | 0.438 | 0.105 | 100.0 | - DotCom Lookup | 0.077 | 0.160 | 1.116 | 0.256 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ cache2.qhxnptt.net.cn CHINANET-BACKBONE No.31,Jin-rong Street, CN 168. 95. 1. 1 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.004 | 0.046 | 0.182 | 0.046 | 97.8 | - Uncached Name | 0.004 | 0.070 | 0.198 | 0.059 | 100.0 | - DotCom Lookup | 0.071 | 0.080 | 0.088 | 0.004 | 97.8 | ---<-------->---+-------+-------+-------+-------+-------+ dns.hinet.net HINET Data Communication Business Group, TW 216.146. 35. 35 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.005 | 0.049 | 0.070 | 0.029 | 100.0 | - Uncached Name | 0.005 | 0.100 | 0.245 | 0.081 | 100.0 | - DotCom Lookup | 0.071 | 0.158 | 0.203 | 0.040 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ rdns.dynect.net DYNDNS - Oracle Corporation, US 61.166.150.123 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.048 | 0.049 | 0.050 | 0.001 | 100.0 | - Uncached Name | 0.082 | 0.153 | 0.402 | 0.085 | 100.0 | - DotCom Lookup | 0.115 | 0.126 | 0.280 | 0.023 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns2.cache.yntel CHINANET-BACKBONE No.31,Jin-rong Street, CN 218.104. 78. 2 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.050 | 0.051 | 0.052 | 0.000 | 100.0 | - Uncached Name | 0.061 | 0.151 | 0.435 | 0.098 | 100.0 | - DotCom Lookup | 0.078 | 0.087 | 0.120 | 0.009 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ 2.78.104.218.adsl-pool.ah.cnuninet.net CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN 222.172.200. 68 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.052 | 0.053 | 0.055 | 0.001 | 100.0 | - Uncached Name | 0.054 | 0.274 | 2.456 | 0.439 | 93.9 | - DotCom Lookup | 0.055 | 0.343 | 3.261 | 0.707 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns.cache.yntel CHINANET-BACKBONE No.31,Jin-rong Street, CN 210.181. 1. 24 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.005 | 0.054 | 0.080 | 0.032 | 100.0 | - Uncached Name | 0.005 | 0.099 | 0.268 | 0.076 | 100.0 | - DotCom Lookup | 0.077 | 0.079 | 0.098 | 0.003 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns.cjdream.net DREAMX-AS DREAMLINE CO., KR 203.112. 2. 5 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.028 | 0.055 | 0.063 | 0.012 | 100.0 | - Uncached Name | 0.028 | 0.084 | 0.259 | 0.052 | 95.9 | - DotCom Lookup | 0.065 | 0.088 | 0.229 | 0.049 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns02.miinet.jp MIINET UCOM Corporation, JP 210.180. 98. 69 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.028 | 0.055 | 0.069 | 0.017 | 100.0 | - Uncached Name | 0.028 | 0.095 | 0.268 | 0.062 | 100.0 | - DotCom Lookup | 0.068 | 0.070 | 0.071 | 0.001 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ fns2.hananet.net SKB-AS SK Broadband Co Ltd, KR 210.220.163. 82 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.028 | 0.055 | 0.068 | 0.017 | 100.0 | - Uncached Name | 0.028 | 0.101 | 0.278 | 0.069 | 100.0 | - DotCom Lookup | 0.068 | 0.071 | 0.100 | 0.005 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ bns1.hananet.net SKB-AS SK Broadband Co Ltd, KR 210. 29. 96. 33 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.057 | 0.058 | 0.060 | 0.001 | 100.0 | - Uncached Name | 0.071 | 0.207 | 0.464 | 0.118 | 100.0 | - DotCom Lookup | 0.253 | 0.302 | 0.427 | 0.046 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns.hhuc.edu.cn ERX-CERNET-BKB China Education and Research Network Cente 203.112. 2. 4 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.029 | 0.059 | 0.064 | 0.009 | 100.0 | - Uncached Name | 0.031 | 0.091 | 0.235 | 0.050 | 100.0 | - DotCom Lookup | 0.067 | 0.084 | 0.227 | 0.045 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ ns01.miinet.jp MIINET UCOM Corporation, JP 202.100.128. 68 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.062 | 0.063 | 0.064 | 0.001 | 100.0 | - Uncached Name | 0.087 | 0.166 | 0.358 | 0.083 | 94.0 | - DotCom Lookup | 0.090 | 0.097 | 0.108 | 0.004 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ cache1.qh.cninfo.net CHINANET-BACKBONE No.31,Jin-rong Street, CN 208. 67.220.220 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.004 | 0.073 | 0.111 | 0.050 | 95.7 | - Uncached Name | 0.004 | 0.121 | 0.283 | 0.100 | 93.3 | - DotCom Lookup | 0.111 | 0.223 | 0.369 | 0.088 | 92.9 | ---<-------->---+-------+-------+-------+-------+-------+ resolver2.opendns.com OPENDNS - OpenDNS, LLC, US 208. 67.222.222 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.004 | 0.095 | 0.180 | 0.073 | 93.2 | - Uncached Name | 0.004 | 0.125 | 0.326 | 0.115 | 85.4 | - DotCom Lookup | 0.111 | 0.257 | 0.419 | 0.090 | 88.6 | ---<-------->---+-------+-------+-------+-------+-------+ resolver1.opendns.com OPENDNS - OpenDNS, LLC, US 149.112.112.112 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.005 | 0.118 | 0.181 | 0.084 | 91.7 | - Uncached Name | 0.005 | 0.171 | 0.511 | 0.140 | 100.0 | - DotCom Lookup | 0.181 | 0.201 | 0.249 | 0.022 | 90.9 | ---<-------->---+-------+-------+-------+-------+-------+ rpz-public-resolver1.rrdns.pch.net QUAD9-AS-1 - Quad9, US 9. 9. 9. 9 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.005 | 0.120 | 0.179 | 0.082 | 100.0 | - Uncached Name | 0.005 | 0.173 | 0.406 | 0.133 | 100.0 | - DotCom Lookup | 0.177 | 0.192 | 0.245 | 0.017 | 100.0 | ---<-------->---+-------+-------+-------+-------+-------+ dns.quad9.net QUAD9-AS-1 - Quad9, US 193.112. 15.186 | Min | Avg | Max |Std.Dev|Reliab%| ----------------+-------+-------+-------+-------+-------+ - Cached Name | 0.006 | 0.186 | 0.521 | 0.108 | 100.0 | - Uncached Name | 0.148 | 0.516 | 0.997 | 0.241 | 100.0 | - DotCom Lookup | 0.323 | 0.539 | 0.727 | 0.088 | 98.0 | ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? CNNIC-TENCENT-NET-AP Shenzhen Tencent Computer Systems Co 117. 50. 22. 22 | DNS queries are not answered at this IP. ---<-------->---+-------+-------+-------+-------+-------+ 贩?no official Internet DNS name 贩? CHINA169-BJ China Unicom Beijing Province Network, CN UTC: 2018-11-22, from 01:14:11 to 01:20:51, for 06:39.712 Interpreting your benchmark results above: The following guide is only intended as a quick "get you going" reference and reminder. To obtain a working understanding of this program's operation, and to familiarize yourself with its many features, please see the main DNS Benchmark web page by clicking on the "Goto DNS Page" button below. Referring to this sample: 64. 81.159. 2 | Min | Avg | Max |Std.Dev|Reliab% ----------------+-------+-------+-------+-------+------- - Cached Name | 0.001 | 0.001 | 0.001 | 0.000 | 100.0 - Uncached Name | 0.021 | 0.033 | 0.045 | 0.016 | 100.0 - DotCom Lookup | 0.021 | 0.022 | 0.022 | 0.001 | 100.0 ---<O-OO---->---+-------+-------+-------+-------+------- dns.chi1.speakeasy.net Speakeasy The Benchmark creates a table similar to the one above for each DNS resolver (nameserver) tested. The top line specifies the IP address of the nameserver for this table. The first three numeric columns provide the minimum, average, and maximum query-response times in seconds. Note that these timings incorporate all network delays from the querying computer, across the Internet, to the nameserver, the nameserver's own processing, and the return of the reply. Since the numbers contain three decimal digits of accuracy, the overall resolution of the timing is thousandths of a second, or milliseconds. The fourth numeric column shows the "standard deviation" of the collected query-response times which is a common statistical measure of the spread of the values - a smaller standard deviation means more consistency and less spread. The fifth and last numeric column shows the reliability of the tested nameserver's replies to queries. Since lost, dropped, or ignored queries introduce a significant lookup delay (typically a full second or more each) a nameserver's reliability is an important consideration. The labels of the middle three lines are colored red, green, and blue to match their respective bars on the response time bar chart. The "Cached Name" line presents the timings for queries that are answered from the server's own local name cache without requiring it to forward the query to other name servers. Since the name caches of active public nameservers will always be full of the IPs of common domains, the vast majority of queries will be cached. Therefore, the Benchmark gives this timing the highest weight. The "Uncached Name" line presents the timings for queries which could not be answered from the server's local cache and required it to ask another name server for the data. Specifically, this measures the time required to resolve the IP addresses of the Internet's 30 most popular web sites. The Benchmark gives this timing the second highest weight. The "DotCom Lookup" line presents the timings for the resolution of dot com nameserver IP addresses. This differs from the Cached and Uncached tests above, since they measure the time required to determine a dot com's IP, whereas the DotCom Lookup measures the time required to resolve the IP of a dot com's nameserver, from which a dot com's IP would then be resolved. This test presents a measure of how well the DNS server being tested is connected to the dot com nameservers. The lower border of the table contains a set of eight indicators (O and -) representing non-routable networks whose IP addresses are actively blocked by the resolver to protect its users from DNS rebinding attacks: <O-OO---->. The "O" character indicates that blocking is occurring for the corresponding network, whereas the "-" character indicates that non-routable IP addresses are being resolved and rebinding protection is not present. The first four symbols represent the four IPv4 networks beginning with 10., 127., 172., and 192. respectively, and the second four symbols are the same networks but for IPv6. The final two lines at the bottom of each chart duplicate the information from the Name and Owner tabs on the Nameserver page: dns.chi1.speakeasy.net Speakeasy The first line displays the "Reverse DNS" name of the server, if any. (This is the name looked up by the nameserver's IP address.) The second line displays the Ownership information, if any, of the network containing the nameserver The final line of the automatically generated chart is a timestamp that shows the date and time of the start, completion, and total elapsed time of the benchmark: UTC: 2009-07-15 from 16:41:50 to 16:44:59 for 03:08.703 All times are given in Universal Coordinated Time (UTC) which is equivalent to GMT. In the sample shown above, the entire benchmark required 3 minutes, 8.703 seconds to run to completion. All, or a marked portion, of the Tabular Data results on this page may be copied to the Windows' clipboard or saved to a file for safe keeping, sharing, or later comparison. • • •
图例说明：
与 IP 放一起的红色部分表示了丢包情况，红色条越长，丢包越严重
中间的绿色空心小圆圈表示这个DNS状态良好，实心表示当前电脑已经使用的DNS
这部分有三种颜色，鼠标点击后会显示更详细的图例，条状越长代表耗时越长
红色---表示缓存的网址查询时间，就是此DNS服务器已经保存了域名和IP的信息，从本机直接查询所花费的时间
绿色---是未缓存的网址查询时间，就是此DNS服务器没有保存的域名和IP的信息，需要从别的DNS服务器查询
紫色---是 .com 网址循环查询时间
根据以上图例说明，我们选取同一次测试结果的三个DNS进行探索：
探索一，125.88.152.241 与 IP 放一起的红色部分基本看不到，说明丢包极少，右侧三个条形整体比较短，说明解析速度很快
通过 PING 目录查看：
125.88.152.241 的 Ping 统计信息:
数据包: 已发送 = 375，已接收 = 374，丢失 = 1 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 4ms，最长 = 38ms，平均 = 7ms
丢包 1% ，平均往返时间 7 ms，
探索二，223.5.5.5 与 IP 放一起的红色部分基本满格，说明丢包非常严重，右侧三个条形整体比较短，说明解析速度很快
通过 PING 功能查看：
223.5.5.5 的 Ping 统计信息:
数据包: 已发送 = 606，已接收 = 570，丢失 = 36 (5% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 3ms，最长 = 79ms，平均 = 28ms
丢包 5% ，平均往返时间 28 ms，
探索三，208.67.220.220 与 IP 放一起的红色部分基本满格，说明丢包非常严重，右侧三个条形整体比较长，说明解析速度比较慢
208.67.220.220 的 Ping 统计信息:
数据包: 已发送 = 689，已接收 = 669，丢失 = 20 (2% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 105ms，最长 = 155ms，平均 = 116ms
丢包 2% ，平均往返时间 116 ms，
由于软件将 速度的权重从高到底依此排为 缓存查询时间-->非缓存查询时间-->.com循环查询时间 ，而且我们ping 的过程与软件测试过程不是同一个时间点，导致了 丢包的差异，而且多次测试后发现，丢包这一项和时间有很大关系，就算是阿里的DNS，有时候延时也会很严重，但依然从整体结果可以看出，这款软件的测试结果是很靠谱的
