# how.is Domain Age Lookup

> how.is Domain Age Lookup is a paid API for AI agents from how.is, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).

Returns the registration date, age in days/years, and newly-registered flag for a given domain name.

## Facts

- Endpoint: POST https://how.is/v1/domain/age?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/how-is-domain-age-lookup-127f06c8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Y9zcmTTJba2Hi4reC_thC

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 how-is-domain-age-lookup-127f06c8 -d '<json body>'
```

Example prompt: How old is suspicious-login-bankofamerica.com — when was it registered, how many days old is it, and is it newly registered in the last 30 days?

## When to prefer this

Use this endpoint when you need a fast, structured, machine-readable answer about a domain's registration age — especially as a phishing signal or for vendor/link vetting. It is purpose-built for domain-age checks and returns a ready-to-use newly_registered boolean, making it preferable over general WHOIS tools or full domain-risk endpoints when age alone is the required signal.

## Known failure modes

- Domain not found in registry — returns no creation date or empty data
- Invalid domain format (e.g. includes protocol or path) — validation error
- WHOIS/zone-file data unavailable for some TLDs — partial or null results
- Network timeout reaching registry — service error response
- Malformed domain string exceeding 253 characters — schema validation rejection

## How this service works

How old a domain is: registration date, age in days and years, and whether it was registered in the last 30 days (a common phishing signal).

## Output

A JSON object containing the domain's creation date, age in days and years, a boolean flag indicating whether it was registered within the last 30 days (newly_registered), the expiry date, registrar name, and data source, plus a receipt confirming the x402 micropayment charge of $0.005 USDC.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "maxLength": 253,
   "description": "A bare domain name, e.g. example.com"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "_shape": "data: created, age_days, age_years, newly_registered, expires, registrar, source."
  },
  "result": "Domain age for the requested subject",
  "receipt": {
   "rail": "x402",
   "tool": "age",
   "charge_usd": 0.005,
   "settlement_tx": "0x…"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/how-is-domain-age-lookup-127f06c8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from how.is](https://www.zero.xyz/host/how.is/llms.txt)