A记录：将主机名转换为IP地址

#!/usr/bin/python3.6.7
import dns.resolver

# 接收数据
domain = input("请输入一个域名>>>:")
dns_type = 'A'
query_object = dns.resolver.resolve(domain, rdtype=dns_type,lifetime=10)
for i in query_object:
    print("解析记录为>>>:%s" % i)

import dns.resolver
from socket import gethostbyname

domain="12306.com"
dns_type='A'
CNAME=dns.resolver.resolve(domain,"A",lifetime=10)#子域名

ip_list=gethostbyname(domain)

print(ip_list)

query_object = dns.resolver.resolve(domain, rdtype=dns_type,lifetime=10)
for i in query_object:
    print("解析记录为>>>:%s" % i)

MX记录：邮件交换记录，定义邮件服务器的域名

import dns.resolver
domain="qq.com"
MX=dns.resolver.resolve(domain,"MX",lifetime=10)
for mx in MX:
    # print(mx)
    #mx.preference代表邮件交换记录,mx.exchange代表邮件服务器域名
    print(mx.preference,mx.exchange)