WHOIS Lookup

Search domain registration information for domains through the official registries.

DENIC WHOIS (.de) EURid WHOIS (.eu)

Registry Information

WHOIS data for domains is managed by their respective registries. Below is a comparison of how each registry handles WHOIS queries.

Feature .NL (SIDN) .EU (EURid)
Registry SIDN (Stichting Internet Domeinregistratie Nederland) EURid (European Registry for Internet Domains)
WHOIS Portal sidn.nl/whois whois.eurid.eu
WHOIS Protocol Port 43 + Web Port 43 + Web + RDAP
Registrant Data Opt-out privacy (GDPR) Hidden by default (GDPR)
Public Fields Domain name, registrar, name servers, DNSSEC, status, dates Domain name, registrar, name servers, registration date, status
Rate Limiting Yes, queries are rate-limited Yes, queries are rate-limited with CAPTCHA
RDAP Support Yes Yes
Dispute Resolution WIPO (via SIDN) CAC (Czech Arbitration Court)
Privacy Notice: In compliance with the GDPR, personal registrant information is no longer publicly available through WHOIS for most domains. Only technical and administrative data (such as name servers, registrar, and domain status) is displayed. If you need to contact a domain registrant, you may submit a request through the respective registry.