# WHOIS Domain Lookup

> WHOIS Domain Lookup is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054001/call, status unknown (last checked 2026-09-13, last successful call 2026-05-01).

Performs a WHOIS lookup for a given domain, returning registrar details, creation/expiry dates, name servers, registrant info, and raw WHOIS data.

## Facts

- Endpoint: GET https://api.strale.io/x402/whois-lookup
- Price: $0.054001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Last successful call: 2026-05-01
- Success rate: 100% of calls made through Zero
- Activations on Zero: 1
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-strale-io-14ed8463
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ivc314s21PWsCdDmlkm8v

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 api-strale-io-14ed8463
```

Example prompt: Can you look up the WHOIS information for openai.com — I want to know who registered it, when it was created, when it expires, and which name servers it uses?

## When to prefer this

Use this endpoint when you need comprehensive WHOIS data for a single domain including registrar, dates, name servers, and registrant details. Ideal for domain research, due diligence, security investigations, or checking domain ownership and expiry.

## Known failure modes

- Domain not found or unregistered — empty or null response
- Invalid domain format — validation error returned
- WHOIS rate limiting by upstream registry — timeout or error
- Private/redacted registrant info due to WHOIS privacy services
- TLD not supported by WHOIS lookup service

## How this service works

Perform a WHOIS lookup for a domain. Returns registrar, creation date, expiry date, name servers, registrant info, and raw WHOIS data.

## Output

Returns structured WHOIS data including registrar name, domain creation date, expiry date, name servers, registrant contact information, and the full raw WHOIS text response.

## Example request

```json
{
 "domain": "example.com"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "domain"
 ],
 "properties": {
  "domain": {
   "type": "string",
   "description": "Domain name (e.g. example.com)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "domain": {
  "type": "string"
 },
 "created": {
  "type": "string"
 },
 "expires": {
  "type": "string"
 },
 "registrar": {
  "type": "string"
 },
 "name_servers": {
  "type": "array"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-strale-io-14ed8463/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)