dnspython( http://www.dnspython.org/ ) 是Python实现的一个DNS工具包,它支持几乎所有的记录类型,可以用于查询、传输并动态更新ZONE信息,同时支持TSIG(事务签名)验证消息和EDNS0(扩展DNS).在系统方面,我们可以利用其查询功能来实现DNS服务监控以及解析结果的校验,可以代替nslookup及dig等工具,轻松做到与现有平台的整合
安装
import sysimport socket
import dns.resolver
print 'Argument List:', str(sys.argv)
site = sys.argv[1]
dns_server = sys.argv[2]
# Basic CNAME query the host's DNS
for rdata in dns.resolver.query(site, 'CNAME') :
print rdata.target
# Basic A query the host's DNS
for rdata in dns.resolver.query(site, 'A') :
print rdata.address
###下边是制定dns解析的服务器设置
# Setting an specific DNS Server
resolver = dns.resolver.Resolver()
resolver.nameservers = [socket.gethostbyname(dns_server)]
# Basic CNAME query with the specific DNS server
answer = resolver.query(site, 'CNAME')
for rdata in answer :
print rdata.target
# Basic A query with the specific DNS server
answer = resolver.query(site, 'A')
for rdata in answer :
print rdata.address
To run:(命令执行)
python dnsdig.py www.youtube.com 8.8.8.8
[root@bogon dns]# vim NS.py
import dns.resolver
domain = raw_input('Please input an domain: ')
ns = dns.resolver.query(domain, 'NS')
for i in ns.response.answer:
for j in i.items:
print j.to_text()
测试:
[root@bogon dns]# python NS.py
Please input an domain: baidu.com #智能输入一级域名
ns4.baidu.com.
ns3.baidu.com.
ns2.baidu.com.
dns.baidu.com.
ns7.baidu.com.
[root@bogon dns]#