WHOIS RDAP Domain Lookup

x402

WHOIS RDAP Domain Lookup is a paid API for AI agents from api.stablecoingateways.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-30).

Looks up a domain's registrar, registration/expiry dates, status codes, nameservers, DNS records, and email-auth posture (SPF/DMARC/DKIM) via RDAP and DNS.

Price / call$0.003

Seller volume →—

Success—

StatusUnknown

How this service works

WHOIS / RDAP domain lookup: give a domain, get registrar, registration (creation), expiry and last-updated dates, status codes and nameservers from the registry's RDAP service, plus DNS records and SPF/DMARC/DKIM email-auth posture. Use to check a domain's age, owner registrar or expiry before trusting a counterparty. No personal data. Signed receipt.

Output

A JSON object containing: RDAP data (registrar name and IANA ID, registered/expiry/last-changed dates, status codes, nameservers, DNSSEC signing, availability flag), DNS records (A, AAAA, MX, NS, CAA, TXT count, DNSSEC validation), HTTPS reachability (status code, HSTS, redirect host), email-auth posture (SPF includes and qualifier, DMARC policy and subdomain policy, MTA-STS, DKIM selectors found), plus a signed payment receipt with timestamp, tx hash, and response hash.

Example use cases

Counterparty domain trust check

“Before I wire money to this vendor, can you check if their domain invoicepay-solutions.com is newly registered or has any red flags — like missing DMARC or suspicious registrar?”

Email security audit for a business

“Can you check the email authentication setup for acmecorp.io — does it have SPF, DMARC, and DKIM configured correctly?”

Domain expiry monitoring

“Can you look up when mybrandname.com is set to expire and who the registrar is, so I know if I need to renew it soon?”

Technical details

Endpoint

GEThttps://api.stablecoingateways.com/v1/whois?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need to quickly verify a domain's trustworthiness before a payment or business interaction, audit email-auth configuration, or check registration age and expiry — all in a single call that combines RDAP, DNS, and email-security data with a verifiable signed receipt. Prefer it over generic WHOIS tools when you need machine-readable structured output with SPF/DMARC/DKIM included.

Side effects

Domain not found or unregistered — RDAP returns available:true with limited data
Registry RDAP service unavailable — partial data returned with a note field explaining the gap
Invalid domain format — request rejected if domain fails the regex pattern
TLD not supported by any RDAP bootstrap — fallback or empty RDAP object returned
DNS resolution failure — DNS sub-object may be empty or missing certain record types
DKIM selector not configured — dkim_selectors_found returns empty array

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "data": {
      "dns": {
        "a": [
          "104.20.23.154"
        ],
        "mx": [
          {}
        ],
        "ns": [
          "hera.ns.cloudflare.com"
        ],
        "caa": [],
        "aaaa": [
          "2606:4700:10::ac42:93f3"
        ]
      },
      "rdap": {
        "source": "https://rdap.verisign.com/com/v1/",
        "available": true,
        "registrar": "RESERVED-Internet Assigned Numbers Authority",
        "registered_domain": "example.com",
        "registrar_iana_id": "376"
      },
      "https": {
        "hsts": null,
        "probed": true,
        "status": 200,
        "reachable": true,
        "redirect_host": null
      },
      "notes": "TLS certificate details are not inspected from Workers; https.reachable reflects a succ...",
      "domain": "example.com",
      "exists": true,
      "sources": [
        "DNS via Cloudflare DoH (cloudflare-dns.com)"
      ],
      "mail_auth": {
        "spf": {
          "present": true,
          "includes": [],
          "all_qualifier": "-all",
          "dns_lookup_terms": 0,
          "multiple_records": false
        },
        "dmarc": {
          "pct": 100,
          "adkim": "s",
          "policy": "reject",
          "present": true,
          "subdomain_policy": "reject"
        },
        "mta_sts": false,
        "dkim_selectors_found": [
          {}
        ],
        "dkim_selectors_checked": [
          "default"
        ]
      },
      "checked_at": "2026-10-22T09:01:19.207Z"
    },
    "receipt": {
      "v": 1,
      "ts": "2026-10-22T09:00:00Z",
      "sig": "hex",
      "price": {
        "asset": "USDC",
        "amount": "3000",
        "network": "eip155:84532"
      },
      "log_seq": 1,
      "tx_hash": "0x..",
      "endpoint_id": "whois-v1",
      "request_hash": "hex",
      "response_hash": "hex"
    }
  }
}

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