Tool detail

DNS & WHOIS Domain Lookup

Returns a domain's MX records, mail server hostnames and priorities, as structured JSON.

Categories: Domains IP

Use when

find a domain's mail servers
check MX record priorities for email routing
detect a domain's email provider from its MX records

Not for

not other record types, MX only, use /a or /txt for others
not WHOIS registration data

Inputs

GET query param: host (bare hostname, 1-253 chars, required, no IPs or .local/.internal)

Admitted input schema

{
  "type": "object",
  "properties": {
    "host": {
      "type": "string",
      "minLength": 1,
      "maxLength": 253,
      "description": "Bare hostname to resolve (not an IP literal, not localhost, not under a reserved suffix like .local/.internal)"
    }
  },
  "required": [
    "host"
  ],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://dns.use.x402atlas.com/mx

Payment

Protocol: x402
Listed price: 0.005 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://dns.use.x402atlas.com/mx
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z