Domain WHOIS & DNS Lookup - Bulk Domain Intelligence at $0.003

Know everything about any domain in seconds — full WHOIS, complete DNS footprint, SPF/DMARC/DKIM posture, and automatic email provider detection (Google Workspace, Microsoft 365, Zoho...). Built for B2B prospecting, security audits and infrastructure research — a fraction of the cost of SecurityTrails or DomainTools.

What you get

• Full WHOIS — registrar, creation/update/expiry dates, registrant org & country, name servers, EPP status codes, DNSSEC flag
• Age + expiry pre-calculated — age_days and days_until_expiry ready to filter
• Complete DNS — A, AAAA, MX, TXT, NS, CNAME, SOA in a single query
• Email security audit — automatic SPF, DMARC and DKIM detection
• Email provider detection — Google Workspace, Microsoft 365, Zoho, Proton, IONOS, Infomaniak and 15+ more identified from MX records
• Smart input normalization — accepts URLs, www. prefixes, bare domains; deduplicates automatically
• No API keys, no setup — paste domains and run

Example output

{
  "domain": "apple.com",
  "whois": {
    "registrar": "CSC Corporate Domains, Inc.",
    "registrant_organization": "Apple Inc.",
    "registrant_country": "US",
    "created_date": "1987-02-19T05:00:00Z",
    "updated_date": "2024-01-25T16:54:20Z",
    "expires_date": "2026-02-20T05:00:00Z",
    "age_days": 14293,
    "days_until_expiry": 320,
    "name_servers": ["a.ns.apple.com", "b.ns.apple.com", "c.ns.apple.com", "d.ns.apple.com"],
    "status": ["clientTransferProhibited", "serverDeleteProhibited"],
    "dnssec": false
  },
  "dns": {
    "a": ["17.253.144.10"],
    "aaaa": ["2620:149:af0::10"],
    "mx": [{ "priority": 10, "host": "apple.com.s.mail-aol.com" }],
    "txt": ["v=spf1 include:_spf.apple.com ~all"],
    "ns": ["a.ns.apple.com", "b.ns.apple.com"],
    "soa": {
      "primary_ns": "a.ns.apple.com",
      "admin_email": "hostmaster@apple.com",
      "serial": 2024012501
    }
  },
  "has_spf": true,
  "has_dmarc": true,
  "has_dkim": false,
  "email_provider": "Other / Self-hosted",
  "scraped_at": "2026-04-07T12:34:56Z"
}

How to use

Drop a list of domains (URLs work too — they're normalized automatically) into the domains input and run. One structured record per domain comes back with full WHOIS + DNS + email posture.

Input

Parameter	Description	Default
domains	Domains to look up (URLs auto-normalized)	(required)
includeWhois	Perform WHOIS lookups	true
includeDNS	Perform DNS lookups + SPF/DMARC/DKIM	true
dnsRecordTypes	Record types to query	["A","AAAA","MX","TXT","NS","CNAME","SOA"]
useDNSServer	DNS resolver (host:port)	8.8.8.8:53
timeoutSeconds	Per-query timeout	10

Use cases

• B2B sales targeting — identify which prospects use Google Workspace vs Microsoft 365 and tailor your pitch
• Security audits — flag every domain missing SPF, DMARC or DKIM as a spoofing-risk finding
• Fraud & phishing detection — low age_days + privacy protection is a classic phishing signal
• Due diligence — map a target company's full DNS footprint before an M&A deal
• Domain portfolio monitoring — track expiry dates across thousands of domains; catch lapses before competitors do
• Competitive intel — detect when competitors re-platform email or change DNS infrastructure
• Lead list enrichment — append domain age, email provider and email security to scraped CRM exports

Pricing

Event	Price
Actor start	$0.001
Per domain looked up	$0.003

Example: Look up 10,000 domains = $30.01 (vs SecurityTrails starter at $99/mo for limited queries)

Domains	Cost
100	$0.30
1,000	$3.00
10,000	$30.00

No monthly fees. No minimum spend.

Tips

• URLs are fine — https://example.com/about?x=1 is normalized to example.com automatically
• GDPR redaction — most registrant contact info is blank for .com/.net domains registered after 2018; the raw WHOIS text is always preserved
• Missing DMARC — has_dmarc: false is one of the easiest security audit findings to flag
• Switch resolvers — if one resolver is rate-limited, try 1.1.1.1:53 (Cloudflare) or 9.9.9.9:53 (Quad9)

Issues & Feedback

Found a bug or need an additional field? Open an issue on the Issues tab — we respond within 24 hours.

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