# DNS Intel API – WHOIS Lookup

> DNS Intel API – WHOIS Lookup is a paid API for AI agents from dns-intel-api-production.up.railway.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Returns WHOIS registration data for a domain including registrar, creation/expiry/updated dates, nameservers, status, DNSSEC, and organisation.

## Facts

- Endpoint: POST https://dns-intel-api-production.up.railway.app/dns/whois
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-intel-api-whois-lookup-d12310de
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4sNm_TK3nfMCV2eLoYgcP

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability dns-intel-api-whois-lookup-d12310de -d '<json body>'
```

Example prompt: Can you pull up the WHOIS registration data for stripe.com — I want to know the registrar, when it was created, when it expires, and who the organisation is?

## When to prefer this

Use this endpoint when you need authoritative domain ownership and registration metadata — particularly registrar, dates, nameservers, and organisation — rather than DNS record resolution. Prefer this over DNS record lookups when the question is about who owns or registered a domain, when it expires, or whether it's a newly registered (potentially suspicious) domain. It complements the sibling DNS-record resolver endpoint which handles A/AAAA/MX/TXT records.

## Known failure modes

- Domain not found or not registered — returns empty or error response
- WHOIS data redacted due to GDPR privacy protection — fields may be missing
- Rate limiting by upstream WHOIS servers causing timeouts
- Invalid domain format in input — validation error
- TLD without public WHOIS service may return incomplete data

## How this service works

WHOIS registration data for a domain: registrar, creation/expiry/updated dates, nameservers, status, DNSSEC, and organisation.

## Output

Returns structured WHOIS registration data for the queried domain, including registrar name, domain creation date, expiry date, last updated date, nameservers list, domain status flags, DNSSEC status, and the registering organisation name.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "description": "Domain name to look up WHOIS registration data for, e.g. 'example.com'."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dns-intel-api-whois-lookup-d12310de/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dns-intel-api-production.up.railway.app](https://www.zero.xyz/host/dns-intel-api-production.up.railway.app/llms.txt)