Registrar (ex. ABC Registrar, Inc.)
Nameserver (ex. NS.EXAMPLE.COM or 18.104.22.168)
For Whois information about country-code (two-letter) top-level domains, try Uwhois.com.
Results for .com and .net are provided courtesy of VeriSign, Inc. For these top-level domains, the results of a successful search will contain only technical information about the registered domain name and referral information for the registrar of the domain name. In the Shared Registration System model, registrars are responsible for maintaining Whois domain name contact information. Please refer to the registrar's Whois service for additional information.