Star Computers

WHOIS / RDAP Lookup

Registrar info, registration dates, nameservers, and status for a domain, plus allocation and ASN data for an IP. Uses RDAP — the modern JSON-based replacement for WHOIS.

DNS Networking

WHOIS / RDAP lookup

Uses rdap.org — modern replacement for port-43 WHOIS. Works for domains and IPs.

WHOIS vs RDAP

Traditional WHOIS runs on port 43 and returns free-form text that every registrar formats differently. RDAP (Registration Data Access Protocol) is the modern replacement: HTTPS, JSON, and a standardized schema across registries and RIRs.

This tool queries rdap.org, which routes the request to the correct authoritative RDAP server for the domain or IP.

What you’ll see

For domains:

  • Registrar, status codes (e.g., clientTransferProhibited), and handle.
  • Creation, last-change, and expiration dates.
  • Nameservers.
  • Registrant / admin / technical contacts (where not redacted by privacy services).

For IP addresses:

  • Allocation range (start/end or CIDR).
  • Owning organization and country.
  • Delegation status and last-change date.

Caveats

  • Not every TLD exposes RDAP yet — especially some ccTLDs. For those, fall back to the registry’s own WHOIS lookup page.
  • Many registrars redact personal registrant info under GDPR. You’ll see placeholder values like REDACTED FOR PRIVACY instead of real contacts.
  • The tool doesn’t follow RDAP referrals, so the first response is what you get.