WHOIS Checker
Look up WHOIS registration data for any domain name. See owner, registrar, registration date, expiry and nameservers.
Free WHOIS Checker — Domain Registration Lookup
WHOIS records contain the official registration information for every domain name. This data includes the domain owner's name and contact details (when not privacy-protected), the registrar, registration and expiration dates, nameservers, and domain status codes. This free WHOIS Checker retrieves the full WHOIS record for any domain instantly.
Enter any domain name to see its complete WHOIS record. Use this tool to research domain ownership, verify contact details for abuse reporting, check expiration dates on domains you want to acquire, audit nameserver configuration, and investigate domain history.
WHOIS data is fundamental for SEO research, domain due diligence, legal investigations, and technical auditing. Understanding a domain's registration history tells you a lot about its trustworthiness and stability.
What WHOIS Data Tells You
Registrant information. The name, organization, and contact details of the domain owner (when not privacy-protected). Used to contact site owners or report abuse.
Registration date. When the domain was first registered. Combined with current date, gives you the domain age.
Expiration date. When the domain registration expires. Domains near expiration may become available for purchase or drop-catching.
Registrar. Which company registered the domain (GoDaddy, Namecheap, Google Domains, etc.).
Nameservers. The DNS servers pointing to where the domain's DNS is managed.
Domain status. ICANN status codes indicating whether the domain can be transferred, deleted, or is locked (clientTransferProhibited, etc.).
WHOIS for SEO Research
For SEO professionals, WHOIS data is useful for competitive research — identifying who owns competitor sites, understanding their network of domains, and researching potential link-building targets. It is also essential for domain acquisition due diligence before purchasing an aged domain.
Always verify WHOIS registration history when purchasing a domain. A domain with multiple previous owners, expired periods, or prior use in spam niches may carry negative SEO history that affects your ability to rank.
Related Tools
- Domain Age Checker – See exactly how old a domain is.
- Domain Hosting Checker – Full hosting and IP details.
- DNS Records Lookup – Check all DNS records for any domain.
Frequently Asked Questions
What is WHOIS?
A public database of domain registration info — owner, registrar, dates, nameservers.
Why is info sometimes hidden?
WHOIS privacy protection replaces personal details with proxy info to reduce spam.
How do I check expiry?
WHOIS shows the exact expiration date. Domains nearing expiry may become available to register.
Is this free?
Yes. Completely free, no account needed.