Domain WHOIS (RDAP)

Domain registration data via RDAP (the structured WHOIS successor): registrar, creation/expiry dates, status, nameservers.

Input

Example output

{
  "domain": "example.com",
  "registrar": "IANA",
  "created": "1995-08-14",
  "expires": "2026-08-13",
  "nameservers": [
    "a.iana-servers.net"
  ],
  "status": [
    "client transfer prohibited"
  ]
}

Try it - see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/whois \
  -H "Content-Type: application/json" \
  -d '{"domain":"example.com"}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/whois", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "domain": "example.com"
  }),
});

Part of these workflows

This tool is one step in 7 curated multi-tool workflows - agents can fetch the whole sequence as an MCP prompt or call https://agent402.tools/api/skill-packs/{slug}/prompt.

• DNS & network ops - End-to-end DNS health check: records, multi-resolver propagation, WHOIS, ASN, robots.txt, and reachability.
• Fraud signals - Is this domain trustworthy, or is it a phishing site / typosquat / scam? Pull the reputation signals an analyst checks before clicking anything: domain age, cert issuance history, hosting reputation, DNS topology, tech-stack fingerprint, and page-content red flags. Different from a security audit - this is about whether the domain is what it claims to be.
• Domain intel - Full domain security and SEO intelligence in one call: WHOIS, DNS, TLS cert, HTTP headers, tech stack, robots policy, and certificate transparency.
• Brand protection - Is this domain legitimate? WHOIS age, DNS resolution, scam/phishing search results, and HTTP headers for a quick trust assessment.
• Competitor scan - What's a competitor using? Tech stack, HTTP headers, WHOIS, and page metadata in one call.
• Domain age and legitimacy - How old and legit is this domain? WHOIS registration, DNS resolution, and TLS certificate in one pass.
• Entity enrichment - Company name → verified identity + web footprint dossier: Wikidata facts, the official LEI legal-entity record, the SEC EDGAR filer, domain registration, tech stack, and brand favicon - in one pass.

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