# WHOIS

Domain, IP address, ASN, TLD, and historical registration lookup service.

## Access

- Kind: api
- Audience: public
- Access: open
- Authentication: No authentication is required for documented public lookups.
- Lifecycle: active
- Observed health: operational

## Integration links

- Base URL: https://whois.datasourceapi.com
- Documentation: https://whois.datasourceapi.com/api/v1/docs
- Repository: https://github.com/coopalliance/whois-query
- Catalog metadata: https://services.datasourceapi.com/api/v1/services/whois

## Capabilities

- asn
- domain-registration
- ip-addresses
- rdap
- whois

## Provenance and freshness

- WHOIS and RDAP registries: Live domain, address, ASN, TLD, and registration observations.

Update cadence: Queries are resolved on demand and tracked in history; scheduled rechecks run daily at 02:00 UTC.. Metadata last verified: 2026-09-03.


## Agent readiness

limited (52/100): Public API documentation is available, but a verified OpenAPI discovery URL was not recorded.

## Examples

### Domain lookup

Retrieve registration information for a domain.

```http
GET https://whois.datasourceapi.com/api/v1/example.com
```