Tool detail

domain-check

Returns domain availability and RDAP registration details, registrar, dates, nameservers and status codes, for a domain name.

Categories: Domains IP

Use when

check whether a domain name is available to register
look up a domain's registrar, creation and expiry dates

Not for

not for TLDs without RDAP coverage, returns supported:false
not a WHOIS privacy/contact lookup

Inputs

GET query param: domain (string, required, LDH/punycode form, no scheme, path or IP)

Admitted input schema

{
  "type": "object",
  "properties": {
    "domain": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "Domain to look up, e.g. example.com. LDH/punycode form; no scheme, path or IP (required)."
    }
  },
  "required": [
    "domain"
  ],
  "additionalProperties": false,
  "description": "Query string only."
}

Endpoint

Method: GET
URL: https://402utils.com/v1/domain-check

Payment

Protocol: x402
Listed price: 0.002 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://402utils.com/v1/domain-check
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z