Changelog

New features, improvements, and fixes for the RDAP API.

Last updated October 15, 2026

October 2026

2026-10-15

  • New A host such as www.example.com now returns 404 not_registrable, naming the domain to look up in registrable_domain. See domain lookup.

2026-10-11

  • New Domain lookups return 404 domain_reserved when the registry refuses a name as reserved, with its wording in reason. See domain lookup.

2026-10-08

  • New WHOIS fallback now also answers for .am (with .հայ), .ax, .bn, .bo, .by (with .бел), .dz (with .الجزائر), .ge, .ir (with .ایران), .jo, .ls, .md, .mk (with .мкд), .mw, .sx, .tg, .tn (with .تونس) and .ug. See WHOIS fallback.

2026-10-02

  • New WHOIS fallback now also answers for .cl, .cn (with .中国 and .中國), .dk, .edu, .ee, .gf, .gh, .hr, .hu, .ie, .il (with .ישראל), .im, .la, .lt, .lv, .mc, .mq, .nz, .pt, .rs (with .срб), .st and .tc. See WHOIS fallback.

September 2026

2026-09-12

  • Improvement dnssec can now be null, for registries that publish no DNSSEC status at all such as .tr, .gg and .nc. It previously read false.
  • New IP lookups now return geofeed, the RFC 8805 geolocation feed the network's operator publishes, where there is one. See IP lookup.

2026-09-07

  • New WHOIS fallback now also answers for .se, .nu, .pe, .nc and .pk, taking it to 30 ccTLDs. See WHOIS fallback.

2026-09-06

  • New WHOIS fallback now also answers for .at, .gg, .hk, .je, .jp, .kr and .mx, taking it to 25 ccTLDs. See WHOIS fallback.

2026-09-02

  • New Domain lookups now answer for ccTLDs that have no RDAP server — .tr, .ae, .sa, .ma, .it, .eu, .ro, .qa, .be, .lu, .sy — by reading the registry's WHOIS server and returning the same shape. See WHOIS fallback.

August 2026

2026-08-20

  • New Lookups now carry a redacted object saying which fields the upstream server withheld and how, flagging substituted values that look genuine. See redaction.

2026-08-12

  • New MCP server for AI agents. Point Claude Code, Cursor, or any Model Context Protocol client at https://rdapapi.io/mcp/rdap for domain, IP, ASN, nameserver, and entity lookups on your existing API key and quota. Setup instructions.

June 2026

2026-06-19

  • New Create multiple named API keys — one per project — and revoke any of them independently from your dashboard. All keys share your plan's quota.

2026-06-02

  • Improvement Documented the per-minute rate-limit headers (X-RateLimit-Limit, X-RateLimit-Remaining) returned on every response so you can pace requests precisely, and added Retry-After to the monthly-quota 429. See rate limits.

May 2026

2026-05-08

  • Improvement API responses now normalize phone numbers to E.164, dates to ISO 8601 UTC, and detect upstream charsets so non-UTF-8 registries no longer leak mojibake.

April 2026

2026-04-25

  • New Quota warning emails and dashboard banner at 75% and 100% of monthly request limit.

2026-04-24

2026-04-22

  • New GET /api/v1/tlds and GET /api/v1/tlds/{tld} return the supported-TLD catalog with per-TLD field availability. See the API docs.

2026-04-18

  • Improvement 404 responses now use error: not_supported for uncovered namespaces, distinct from error: not_found for missing records.
  • Improvement Nameserver hostnames in API responses are validated and cleaned of registry-packed annotations.

2026-04-17

  • Fix Fixed .fi domain lookups that were returning 404 due to a stale URL override.

March 2026

2026-03-29

  • New View and download invoices and credit notes from the billing page.

2026-03-17

  • Breaking Upstream rate limits now return HTTP 503 with Retry-After, distinct from 429 for plan quota. SDKs raise TemporarilyUnavailableError.

2026-03-14

  • New Added support for .aw (Aruba) domain lookups.

2026-03-07

  • Improvement Plan rate limit responses (HTTP 429) now include a retry_after field in the JSON body, so SDKs know exactly when to retry.

2026-03-06

  • New Launched /stats, a public page with aggregate statistics computed from RDAP responses across all supported TLDs.

2026-03-03

  • New CIDR lookup support on the IP endpoint. GET /api/v1/ip/192.0.2.0/24 returns block ownership instead of requiring a single address.

February 2026

2026-02-26

2026-02-25

  • New Bulk domain lookup. Query up to 10 domains in a single API call via POST /api/v1/domains/bulk.

2026-02-24

  • New Four new endpoints: GET /api/v1/ip/{address}, /asn/{number}, /nameserver/{host}, /entity/{handle}.

2026-02-23

  • New Public lookup pages at /lookup/{domain}.
  • New /tlds directory with search over 1,200+ supported registries.

2026-02-22

  • New Registrar follow-through. Pass ?follow=true on a domain lookup to merge richer entity data from the registrar RDAP server.

2026-02-20

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