# percallapi.com WHOIS Lookup

> percallapi.com WHOIS Lookup is a paid API for AI agents from percallapi.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Look up WHOIS registration records and domain availability for any domain name, returning registrar, status, and expiration details in JSON.

## Facts

- Endpoint: GET https://percallapi.com/whois?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/percallapi-com-whois-lookup-24cbd83e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZcRUfd-aXaH8EtGnphKZx

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 percallapi-com-whois-lookup-24cbd83e
```

Example prompt: Can you look up the WHOIS record for openai.com and tell me who the registrar is, what the current status is, and when it expires?

## When to prefer this

Use this endpoint when you need structured JSON WHOIS data including registrar, status, and expiration for a specific domain, especially in agentic workflows that need to parse domain registration details programmatically. Prefer this over manual WHOIS lookups or scraping when you need reliable, machine-readable output at low per-call cost.

## Known failure modes

- Domain not found or unregistered — may return empty or null WHOIS fields
- Invalid domain format passed via ?domain= parameter
- TLD not supported by upstream WHOIS service
- Rate limiting or payment failure resulting in 402 response
- Timeout if upstream WHOIS registry is slow to respond

## How this service works

Lookup WHOIS records and domain availability in JSON format. Provide the domain name via ?domain=example.com to query registrar, status, and expiration dates.

## Output

A JSON object containing WHOIS data for the queried domain, including the registrar name, domain registration status (e.g. active, expired, pending deletion), expiration date, and domain availability indicator.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/percallapi-com-whois-lookup-24cbd83e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from percallapi.com](https://www.zero.xyz/host/percallapi.com/llms.txt)