Query DNS information with nslookup

Source: Internet
Author: User
Tags nameserver nslookup

Nslookup is a very interesting small command. We use it to see what information is available on DNS.
[Root @ monitor ~] # Nslookup-q = any baidu.com
Server: 8.8.8.8
Address: 8.8.8.8 #53
Non-authoritative answer:
Baidu.com
Origin = dns.baidu.com
Mail addr = sa.baidu.com
Serial = 2011090701
Refresh = 300.
Retry = 300.
Expire = 2592000
Minimum= 7200
Baidu.com text = "v = spf1 ip4: 61.135.163.0/24 ip4: 220.181.50.0/24 ip4: 220.181.18.241 ip4: 220.181.27.29 ip4: 61.135.162.0/24 ip4: 220.181.5.0/24 ip4: 123.125.66.0/24 ip4: 61.135.168.0/24 a mx ptr ~ All"
Name: baidu.com
Address: 220.181.111.86
Name: baidu.com
Address: 123.125.114.144
Name: baidu.com
Address: 220.181.111.85
Baidu.com mail exchanger = 10 mx1.baidu.com.
Baidu.com mail exchanger = 20 mx50.baidu.com.
Baidu.com nameserver = ns3.baidu.com.
Baidu.com nameserver = dns.baidu.com.
Baidu.com nameserver = ns4.baidu.com.
Baidu.com nameserver = ns2.baidu.com.
Authoritative answers can be found from:
We can use the any parameter to know more information about n on Baidu DNS, such as txt records and serial numbers. (we can see that Baidu dns was changed in September 7) address information (it seems that Baidu Telecom has many lines), mx records, ns records; mail addr is sa.baidu.com (presumably the contact Address must be sa # baidu.com)
With this information, we can have a preliminary understanding of a website.

Author: "Good life, happy work !"

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.