in the name of god
| - Description
This script is intended to lookup for domain registrant data for all top-level
domains (both generic and country-code types are supported, 158 TLDs in total).
|| - USAGE
2. Enter the domain name (only the name itself, without http://www) or
IP address you want to get whois data.
3. View results online.
You can go to the following website http://www.iana.org/whois and search for record companies, which owns the extensions (suffixes) .