Website diagnostics
WHOIS Lookup & Domain Search
Run a free WHOIS lookup and domain search with Web Health. Find registrar details, registration and expiration dates, ownership data, ICANN status codes, and name servers.
Understanding WHOIS & RDAP Domain Data
Every registered domain name on the Internet maintains a record of administrative and technical contacts, ICANN status flags, registrar identifiers, and name server assignments. Performing a WHOIS lookup allows network engineers, cybersecurity analysts, and domain buyers to verify domain ownership and operational status.
Key WHOIS Fields Inspected
- Registrar: Sponsoring domain registrar (e.g. GoDaddy, Namecheap, Cloudflare).
- Creation Date: Initial registration timestamp of the domain.
- Expiration Date: Expiry deadline after which the domain risks deletion.
- Name Servers: Authoritative DNS servers responsible for resolving the domain.
- ICANN Status: Domain lock flags ensuring security against hijacking.
Why Perform a WHOIS Search?
- Verify Ownership: Confirm domain registration and contact details.
- Monitor Expiration: Prevent domain expiry and unintended service interruptions.
- Investigate Security: Identify suspicious domains or potential spoofing attempts.
- Debug DNS Routing: Verify delegated name servers across global registries.
Frequently Asked Questions
A WHOIS lookup queries public registration databases to retrieve administrative, technical, and ownership data for a domain name. RDAP (Registration Data Access Protocol) is the standardized, modern successor to traditional WHOIS, delivering machine-readable JSON data with improved security and localized formatting.