Domain WHOIS and DNS lookup API
Domain intelligence in one call: DNS records (A, AAAA, CNAME, MX, NS, TXT, CAA), DNSSEC status, registrar, registration and expiry dates with domain age in days (RDAP/WHOIS), and email authentication (SPF and DMARC records and policies, whether the domain accepts mail). Use for lead qualification, phishing and trust checks, and deliverability audits. For a trust verdict with named flags use domain_report.
When an agent wants this
- See a domain's DNS records, registrar and registration and expiry dates
- Check domain age before trusting a lead or a sender
- Audit SPF and DMARC for email deliverability
DNS lookup, WHOIS lookup: DNS, RDAP registration age and email authentication $0.005
Domain intelligence in one call: DNS records (A, AAAA, CNAME, MX, NS, TXT, CAA), DNSSEC status, registrar, registration and expiry dates with domain age in days (RDAP/WHOIS), and email authentication (SPF and DMARC records and policies, whether the domain accepts mail). Use for lead qualification, phishing and trust checks, and deliverability audits. For a trust verdict with named flags use domain_report.
Inputs: name (required): Domain name, e.g. cloudflare.com.
Free first (25 successful calls per caller, no key):
curl "https://tools.funwords.eu/domain?name=cloudflare.com&trial=1"With a card key from /credits, in a header or, when your client can only fetch a URL, in the URL:
curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/domain?name=cloudflare.com"
curl "https://tools.funwords.eu/domain?name=cloudflare.com&api_key=adt_…"Without a key the same URL answers 402 Payment Required with x402 and MPP terms, so a wallet client pays USDC per call and retries. Over MCP (https://tools.funwords.eu/mcp) this tool is domain.
Example result
{
"domain": "cloudflare.com",
"exists": true,
"dns": {
"a": [
"104.16.132.229",
"104.16.133.229"
],
"mx": [
{
"priority": 5,
"host": "mxa-canary.global.inbound.cf-emailsecurity.net"
}
],
"ns": [
"ns3.cloudflare.com",
"ns4.cloudflare.com"
],
"dnssecValidated": true
},
"email": {
"acceptsMail": true,
"spfPolicy": "-all",
"dmarcPolicy": "reject"
},
"registration": {
"registrableDomain": "cloudflare.com",
"registrar": "Cloudflare, Inc.",
"registeredAt": "2009-02-17T22:07:54Z",
"expiresAt": "2033-02-17T22:07:54Z",
"ageDays": 6441,
"dnssecSigned": true
}
}DNS records lookup: A, AAAA, MX, TXT, CNAME, NS and more $0.01
Look up DNS records of a domain over DNS-over-HTTPS (Cloudflare 1.1.1.1): A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, SRV, PTR, DS, DNSKEY or HTTPS, with each answer's TTL, the response code (NOERROR, NXDOMAIN…) and whether DNSSEC validated. Use to check email (MX, SPF in TXT), verify a domain, or debug a DNS change; for whether the change has spread use dns_propagation.
Inputs: name (required): Domain name (or a URL; its host is used); type: Record type: A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, SRV, PTR, DS, DNSKEY, HTTPS (default A).
Free first (25 successful calls per caller, no key):
curl "https://tools.funwords.eu/dns/lookup?name=example.com&trial=1"With a card key from /credits, in a header or, when your client can only fetch a URL, in the URL:
curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/dns/lookup?name=example.com"
curl "https://tools.funwords.eu/dns/lookup?name=example.com&api_key=adt_…"Without a key the same URL answers 402 Payment Required with x402 and MPP terms, so a wallet client pays USDC per call and retries. Over MCP (https://tools.funwords.eu/mcp) this tool is dns_lookup.
Example result
{
"name": "example.com",
"type": "MX",
"status": "NOERROR",
"dnssec": true,
"answers": [
{
"data": "0 .",
"ttl": 86400
}
],
"resolver": "Cloudflare"
}Domain lookup, trust verdict: age, DNS and email-auth flags $0.01
A trust verdict for any domain in one call: high/medium/low trust with named flags for very new registrations, expiry, missing or weak SPF and DMARC, too few nameservers, no web host and non-resolving domains, plus the key facts (registrar, age, nameservers, DNSSEC). Use for lead qualification, phishing and vendor checks, and before an agent sends mail to or trusts a domain. Signals only, not a guarantee. Raw DNS records: domain.
Inputs: name (required): Domain name, e.g. cloudflare.com.
Free first (25 successful calls per caller, no key):
curl "https://tools.funwords.eu/domain-report?name=cloudflare.com&trial=1"With a card key from /credits, in a header or, when your client can only fetch a URL, in the URL:
curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/domain-report?name=cloudflare.com"
curl "https://tools.funwords.eu/domain-report?name=cloudflare.com&api_key=adt_…"Without a key the same URL answers 402 Payment Required with x402 and MPP terms, so a wallet client pays USDC per call and retries. Over MCP (https://tools.funwords.eu/mcp) this tool is domain_report.
Example result
{
"domain": "cloudflare.com",
"trust": "high",
"summary": "high trust: 0 high and 0 medium flag(s). Based on DNS, registration and email-authentication signals only.",
"flags": [],
"facts": {
"exists": true,
"registrar": "Cloudflare, Inc.",
"registeredAt": "2009-02-17T22:07:54Z",
"expiresAt": "2033-02-17T22:07:54Z",
"ageDays": 6447,
"nameservers": [
"ns3.cloudflare.com",
"ns4.cloudflare.com"
],
"acceptsMail": true,
"spfPolicy": "-all",
"dmarcPolicy": "reject",
"dnssecValidated": true
},
"checkedAt": "2026-10-14T19:25:28.425Z"
}Questions
Which records are included?
A, AAAA, CNAME, MX, NS, TXT and CAA, plus DNSSEC status, RDAP/WHOIS dates and the SPF and DMARC policies.
How do I pay?
Each successful call costs the tool's price; failed calls are not charged. The first 25 calls are free. Then pay with card credits from $1 (the key goes in an Authorization header or as api_key= in the URL) or per call in USDC over x402 or MPP. No account is needed.