Whois.com - Domain Names & Identity for Everyone
https://www.whois.com/
Get verified Whois information for any Domain Name, Check Domain Availability for FREE! Register Domain Names at best prices and host your own website.
WHOIS Search, Domain Name, Website, and IP Tools - Who.is
https://who.is/
Large database of whois information, DNS, domain names, name servers, IPs, and tools for searching and monitoring domain names. Search the whois database, look up domain and IP owner information, and check out dozens of other statistics. On Demand Domain Data.
Whois Lookup & IP | Whois.net
https://whois.net/
WhoIs lets you perform a domain whois search, whois IP lookup and search In addition to looking up a domain by IP, Whois lookup can also help you validate your website code with one of several Domain and SEO tools including CSE HTML validator, W3C HTML validator and the CSS Validator.
WHOIS - Wikipedia
https://en.wikipedia.org/wiki/WHOIS
WHOIS (pronounced as the phrase "who is") is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource...
Whois Lookup, Domain Availability & IP Search - DomainTools
https://whois.domaintools.com/
Research domain ownership with Whois Lookup: Get ownership info, IP address history, rank, traffic, SEO & more. Find available domains & domains for sale.
ICANN Lookup
https://lookup.icann.org/
In cases of WHOIS failover lookups, ICANN may generate, collect, retain or store the domain name queried The Domain Name Registration Data lookup and WHOIS failover lookup results are shown to help users obtain information about domain name registration records, and for no other purpose.