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Use our WHOIS domain lookup tool to check domain registration details, ownership records, and important domain information — perfect for research, verification, and domain management.
Our WHOIS checker helps you quickly search available public domain data for research, verification, and domain management.
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WHOIS is a protocol used to query databases and obtain information about the registration of internet resources — domain names, IP addresses, and autonomous system numbers. The term also refers to the system and databases that store this information.
WHOIS is primarily used to look up information about the owner of a domain name, such as their contact details. It’s also used to find information about IP addresses, including their allocation and registration details.
WHOIS databases are operated by domain name registries and regional internet registries (RIRs) for IP addresses. These organizations maintain databases of registration information for the resources they manage.
There isn’t a single global WHOIS directory. Instead, various WHOIS databases are maintained by individual registries and registrars for the different top-level domains (TLDs).