RDAP API — The Modern WHOIS Replacement

Normalized JSON for domains, IPs, ASNs, and entities via the RDAP protocol — the official WHOIS successor. One call, consistent format across 1,200+ TLDs.

Free lookup — no signup required

Normalized JSON

Flat, consistent format across all registries. No more parsing vcardArray.

Fast & cached

Redis-cached responses. We handle upstream rate limits for you.

Simple auth

Bearer token authentication. Usage dashboard. Predictable pricing.

One API call. Clean JSON. Domains, IPs, ASNs & Entities.

Get normalized RDAP data via a simple REST API. Consistent format across all supported registries — no more parsing vcardArray. Look up 10 domains in a single request with bulk lookups.

GET /api/v1/domain/google.com
{
  "domain": "google.com",
  "unicode_name": null,
  "handle": "2138514_DOMAIN_COM-VRSN",
  "status": [
    "client delete prohibited",
    "client transfer prohibited",
    "client update prohibited",
    "server delete prohibited",
    "server transfer prohibited",
    "server update prohibited"
  ],
  "registrar": {
    "name": "MarkMonitor Inc.",
    "iana_id": "292",
    "abuse_email": "[email protected]",
    "abuse_phone": "+1.2086851750",
    "url": "http://www.markmonitor.com"
  },
  "dates": {
    "registered": "1997-09-15T04:00:00Z",
    "expires": "2028-09-14T04:00:00Z",
    "updated": "2019-09-09T15:39:04Z"
  },
  "nameservers": [
    "ns1.google.com",
    "ns2.google.com",
    "ns3.google.com",
    "ns4.google.com"
  ],
  "dnssec": false,
  "entities": {}
}
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