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WHOIS Lookup (RDAP)
datawhoisrdapdomaindnsregistrar
WHOIS Lookup (RDAP) is a paid API for AI agents from ZeroClick x402 Service Registry at whois.withzero.ai, paid per call via MPP, $0.001/call, not verified (last probed 2026-10-10); live alternatives: Stable Domains Availability Checker ($0.05) and NetIntel Bulk Domain Availability Check ($0.1).
Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5. Live alternatives for the same use case: Stable Domains Availability Checker ($0.05) · NetIntel Bulk Domain Availability Check ($0.1).
Look up domain registration details including registrar, creation/expiration dates, name servers, and status using the RDAP protocol.
Price / call$0.001
Success100%
StatusUnknown
How this service works
Look up domain registration details using the RDAP protocol (the modern successor to WHOIS). Free, no API key needed. Input: a domain name. Output: registrar, creation date, expiration date, last updated date, name servers, and domain status.
Output
Returns a structured object with the queried domain name, registrar name, ISO 8601 creation/expiration/last-updated dates (or null if unavailable), a list of authoritative name servers, and an array of domain status codes such as 'active' or 'clientTransferProhibited'.
Example use cases
Example prompt
“Can you look up the WHOIS registration details for github.com — I want to know the registrar, when it was created, when it expires, and what name servers it's using?”
Technical details
Endpoint
POSThttps://whois.withzero.ai/run?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured domain registration metadata (registrar, dates, name servers, status) for any domain, especially when you want a free, key-free solution using the modern RDAP protocol rather than legacy WHOIS. Ideal for agents checking domain ownership, expiration risk, or DNS configuration.
Side effects
- Domain not found or not registered — registrar and dates may return null
- RDAP registry for the TLD is unavailable or unresponsive — may return partial data
- Invalid domain format — validation error on input
- TLD not supported by RDAP protocol — limited or no data returned
Input
{
"domain": "example.com"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| domainrequired | string | Domain name to look up (e.g. "example.com", "google.co.uk") |
Output
{
"domain": "example.com",
"status": [
"client delete prohibited",
"client transfer prohibited",
"client update prohibited"
],
"registrar": "RESERVED-Internet Assigned Numbers Authority",
"createdDate": "1995-08-14T04:00:00Z",
"expiresDate": "2026-08-13T04:00:00Z",
"nameServers": [
"elliott.ns.cloudflare.com",
"hera.ns.cloudflare.com"
],
"updatedDate": "2026-01-16T18:26:50Z"
}Schema · Response
| Field | Type | Description |
|---|---|---|
| domainrequired | string | The queried domain name |
| statusrequired | array | Domain status codes (e.g. "active", "clientTransferProhibited") |
| registrarrequired | string | Domain registrar name |
| createdDaterequired | string | Domain creation date (ISO 8601) or null if unavailable |
| expiresDaterequired | string | Domain expiration date (ISO 8601) or null if unavailable |
| nameServersrequired | array | List of authoritative name servers |
| updatedDaterequired | string | Last updated date (ISO 8601) or null if unavailable |
Tags
datawhoisrdapdomaindnsregistrarlookup
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