What WHOIS Contains

WHOIS records contain registration information about domain names. A typical WHOIS record includes: domain name, registrar (where the domain was registered), registration date, expiration date, last updated date, name servers, registrant name and organization, administrative contact, technical contact, and DNSSEC status.

This information helps with domain due diligence, legal investigations, and competitive research. Before purchasing a domain, always check its WHOIS history for previous ownership, penalties, or expiration issues.

Performing a WHOIS Lookup

Use our WHOIS lookup tool to retrieve domain registration information. Enter any domain name and the tool displays the current WHOIS record with parsed, easy-to-read fields.

ICANN Lookup (lookup.icann.org) provides official WHOIS data directly from the registry. This is the authoritative source for domain registration information.

Command-line WHOIS lookup:

whois example.com\n# Returns full WHOIS record with registration details

Privacy Protection and GDPR

Most registrars offer WHOIS privacy protection that replaces your personal information with proxy details. This prevents spam, unwanted contact, and identity theft. Privacy protection is free or low-cost with most registrars.

GDPR significantly impacted WHOIS. European registrars redact personal information from WHOIS records for domains owned by EU residents. This has reduced the amount of personal data visible in WHOIS lookups.

Domain Expiration Management

Track domain expiration dates to prevent accidental lapses. Set up auto-renewal with your registrar and maintain current payment information. Domain expiration causes website downtime, email disruption, and loss of search rankings.

Create a domain inventory listing all domains, registrars, expiration dates, and renewal costs. Review quarterly. Our WHOIS lookup tool helps you verify current expiration dates across all your domains.

Reverse WHOIS

Reverse WHOIS finds all domains registered by a specific person or organization. This reveals competitor domain portfolios, identifies serial domain squatters, and uncovers hidden relationships between domains.

Use reverse WHOIS to research competitors' domain strategies. If a competitor owns multiple related domains, they may be planning microsites, regional targeting, or defensive registrations.