Registration Data Access Protocol

Registration data, the standards way.

CTR’s RDAP service is built around standards-based HTTPS and JSON, privacy-aware data handling, clear error responses, and measured controls against misuse.

Current access: Lookup URLs are limited to internal validation. This page contains no active query form, and public RDAP queries are not available yet.

Our RDAP posture

The service supports the standard domain, entity, nameserver, and help resources, with GET, HEAD, and OPTIONS behavior. Responses use the application/rdap+json media type and protocol-shaped error handling. Personal registration data is redacted by default unless the registry’s authoritative disclosure policy permits publication.

CTR keeps core lookup behavior deliberately narrow. Search and subsetting are not enabled at this stage, and rate limits are treated as operational abuse controls rather than marketing claims.

  • ProtocolRFC 9082 queries and RFC 9083 JSON responses
  • PrivacyRFC 9537-style redaction information and policy-led disclosure
  • ResourcesDomain, entity, nameserver, and service help
  • Public accessNot available yet