dnspython

dnspython

一个Python实现的一个DNS工具包，利用其查询功能来实现dns的服务监控及解析结果的校验。

安装

pip install dnspython

解析域名为IP

from dns import resolver
f = open('ddd.log', 'w')
with open('urls.txt', 'r') as fp:
    for line in fp:
        try:
            url = line[7:].strip()
            ans = resolver.query(url, 'A')	# A记录，将主机名转换为IP地址；
            # for x in ans.response.answer:	# 获取结果
    			# for y in x.items:
        			# print(y)
            t = url + '||Successful!'
        except Exception as e:
            t = url + '||' + str(e)
            print('resolver error!')
        finally:
            f.write(t + '\n')
f.close()

urls.txt

http://www.lyskjqbyjs.cn
http://www.haict.edu.cn
http://news.kf.cn
http://www.henanjubao.com
http://huixiangtan.smx.net.cn
http://www.hnjnjc.gov.cn
...

ddd.log

www.lyskjqbyjs.cn||Successful!
www.haict.edu.cn||None of DNS query names exist: www.haict.edu.cn., www.haict.edu.cn.
news.kf.cn||Successful!
www.henanjubao.com||Successful!
huixiangtan.smx.net.cn||Successful!
www.xcxnmj.gov.cn||None of DNS query names exist: www.xcxnmj.gov.cn., wx.hazz-l-
www.yhgq.gov.cn||Successful!
www.zzdangshi.com||Successful!
smx.hnwzj.gov.cn||Successful!
wfxy.ayit.edu.cn||Successful!
www.sqsglj.com||All nameservers failed to answer the query www.sqsglj.com. IN A: Server 127.0.0.53 UDP port 53 answered The DNS operation timed out.; Server 127.0.0.53 UDP port 53 answered The DNS operation timed out.; Server 127.0.0.53 UDP port 53 answered The DNS operation timed out.; Server 127.0.0.53 UDP port 53 answered The DNS operation timed out.; Server 127.0.0.53 UDP port 53 answered The DNS operation timed out.; Server 127.0.0.53 UDP port 53 answered The DNS operation timed out.; Server 127.0.0.53 UDP port 53 answered SERVFAIL
www.yyxsjj.gov.cn||Successful!
...

socket包的gethostbyname(URL)也能解析IP地址，jd不推荐用socket，推荐dnspython。