dnspython库

import dns
from dns import resolver
# 获取主机A记录
ans=resolver.query('www.baidu.com','A')
for i in ans.response.answer:
    for j in i.items:
        print j
# 获取ns记录
my_resolver=dns.resolver.Resolver()
my_resolver.nameservers = ['8.8.8.8']
# 指定dns服务器
ans=my_resolver.query('sd.gov.cn','NS')
# 默认dns服务器
ans=resolver.query('sd.gov.cn','NS')
for i in ans.response.answer:
    for j in i.items:
        print j
# 获取mx记录
mx=resolver.query('163.com','MX')
for k in  mx:
    print k
不要将python脚本命名为dns.py