The Beast: a.k.a. IT Security by Cakir Murat

Author:Cakir, Murat [Cakir, Murat]
Language: eng
Format: mobi
Published: 2019-05-06T16:00:00+00:00

Whois Search

Whois information will contain data about the registrars of domain names, their addresses and contact information, the other domains they may have, other contacts like technical and billing contact names etc.

http://whois.net/

http://whois.domaintools.com

https://whois.icann.org/

https://www.robtex.com/

http://www.dnsstuff.com/

http://www.publicinterestregistry.net/

are popular web sites offering this information.

And you also have operating systems commands;

whois [-h whois server] name (for linux)

whois [-v] domainname [whois.server] (for windows with SysInternals’ whois command https://technet.microsoft.com/en-us/sysinternals/whois.aspx)

whoiscl [-r] [-n] [-socks4] [-socks5] Domain (for windows with support for older versions with NirSoft’s WhoisCL http://www.nirsoft.net/utils/whoiscl.html)

Whois database is maintained by registrars and registries. Any questions or troubles regarding a domain should go to the appropriate contact for that domain in whois database. It is also possible to keep registrars’ information private but even in that case there will be proper contact information since it is an obligation for registrars to be reachable in case legal issues occur.

If you remember the story about purchasing google.com domain (for a minute) by a former Google employee (http://www.businessinsider.com/this-guy-bought-googlecom-from-google-for-one-minute-2015-9) the data he used was coming from whois information which provides expiration date.

Whois is defined by RFC 3912 (https://tools.ietf.org/html/rfc3912) and works through port TCP 43.

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