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Aero Windwalker
Asked: 2017-10-23 21:50:02 +0800 CST

How to lookup a ip of a domain via a specific DNS?

  • 772

I am familiar with nslookup and host commands, but if, for example, my default DNS is a non-Chinese DNS, and I do a host -t NS weimobdc.com, it will return connection timed out; no servers could be reached.

I want to look it up through a specific DNS, like host -DNS 114.114.114.114 weimobdc.com. Is this possible?

networking

2 Answers

  1. Best Answer

    You can use dig command

     dig -t [option] [name] [server]

    Example

     dig -t any askununtu.com 8.8.8.8
 dig -t any askubuntu.com 8.8.4.4

    More you can find here

    or you can use host 

    host name server

    Example 

    host askubuntu.com 8.8.8.8

    More you can find here

    If you have problem to send query to some dns server you can try make connection to that server with command

    nc -v -u 10.10.10.10 53

nc - netcat command
v - verbose
u - udp protocol
10.10.10.10 - dns server ip
53 - port

    Output will be something like this if work

    nc -v -u 10.10.10.10 53
Connection to 10.10.10.10 53 port [udp/domain] succeeded!

    Maybe is not allowed to send query except to you internet provider dns server. You must check with your ISP

    • 3

  2. Since you're familiar with nslookup:

    nslookup weimobdc.com 114.114.114.114
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