Install dns-utils(dig, nslookup, host) On iPhone

dig, nslookup, host tools in bind package

# apt-get install bind
# cat > /etc/resolv.conf
nameserver 8.8.8.8
^D

if you don't need bind server, try following:

# cp /usr/bin/dig /usr/bin/dig_
# cp /usr/bin/nslookup /usr/bin/nslookup_
# cp /usr/bin/host /usr/bin/host_
# apt-get remove bind
# mv /usr/bin/dig_ /usr/bin/dig
# mv /usr/bin/nslookup_ /usr/bin/nslookup
# mv /usr/bin/host_ /usr/bin/host

P.S.

the python way:

import socket
print socket.gethostbyname('www.google.com')

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