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DNS查询 nameserver

  • 视频 DNS查询nameserver，用WireShark检查DNS报文，Python编程

  • 参考

  • DNS设置

    • cat /etc/resolv.conf

  • 打开 WireShark

    • 过滤 dns
    • DNS 报文格式
    • 测试
      • dig @114.114.114.114 www.free-proxy.com

  • Python编程 

    import socket
host='www.bilibili.com'
socket.gethostbyname(host)
#'120.92.113.99'

  • 指定 nameserver
    • https://github.com/rthalley/dnspython/tree/master/examples 
      import dns.resolver
resolver = dns.resolver.Resolver(configure=False)
resolver.nameservers = ['8.8.8.8']
answer = resolver.query('amazon.com', 'A')
for ans in answer.response.answer:
    print(ans)
    for rec in ans.items:
        print('ip ',rec)
  • Go 编程