🔎 Domain Lookup API: DNS, MX, SPF, Tech & Contact Emails

One call, DNS + the live homepage, one record. Give a domain (or many) and get a single structured intel record — resolved IPs, mail (MX) & name servers, SPF, homepage title/description/ tech, social profile links, and public contact emails — instead of juggling DNS tools and a crawler.

Headless · keyless (no API keys) · structured JSON out · built for AI agents.

⚡ Why it's different

Other actors give you raw DNS or raw page scrapes. This one fuses them into one agent-ready record and judges it: does it resolve, does it run mail, does it expose contacts? Ask once.

📋 What you get (per domain)

Field	Meaning
resolves, dns.a, dns.aaaa	Does it resolve + its IPv4/IPv6
dns.mx, hasMailServer	Mail servers + a flag
dns.ns, dns.spf, dns.txt	Name servers, SPF record, TXT records
homepage.title, .metaDescription, .canonical, .generator	Live homepage metadata + tech hint
techHints	Detected stack hints (e.g. generator)
social	LinkedIn / Twitter(X) / Facebook / Instagram / YouTube / GitHub / TikTok links
emails	Public contact emails found on the homepage
robotsTxt, sitemaps	robots.txt presence + any declared sitemaps
hasContacts	True if emails or social links were found

📥 Input

Field	Type	Meaning
domain	string	A single domain, e.g. apify.com (scheme/path stripped)
domains	array	Many domains: ["apify.com","stripe.com"] (billed per domain)
includeEmails	boolean	Extract public contact emails (default true; off to skip personal data)
webhookUrl	string	POST the records here (Zapier/Make/n8n/custom)

Example input

{ "domains": ["apify.com", "stripe.com"] }

📤 Output (one row per domain)

{
  "domain": "apify.com", "resolves": true, "hasMailServer": true,
  "dns": { "a": ["99.84.9.10"], "mx": ["0 apify-com.mail.protection.outlook.com."],
           "ns": ["ns-1928.awsdns-49.co.uk."], "spf": "v=spf1 include:... -all", "txt": ["..."] },
  "homepage": { "finalUrl": "https://apify.com/", "statusCode": 200,
                "title": "Apify: Marketplace of ready-to-run tools for AI",
                "metaDescription": "...", "generator": null },
  "techHints": [], "social": [{"platform":"github","url":"https://github.com/apify"}],
  "emails": ["support@apify.com"], "robotsTxt": true, "sitemaps": ["https://apify.com/sitemap.xml"],
  "hasContacts": true, "sources": ["dns.google (DNS-over-HTTPS)", "apify.com (homepage)"],
  "capturedAt": "2026-..."
}

💰 Pricing (pay-per-event menu)

• domain-analyzed — base, charged per domain.
• contacts-found — premium, charged only when a domain yields emails/social (the high-value outcome).

💡 Use cases

• Lead enrichment: turn a list of domains into contacts + socials + tech in one call.
• Due diligence / KYB: does it resolve, run mail (MX/SPF), what's the stack, who to contact.
• Agent tools: give an outreach/research agent one call instead of DNS + crawl + parse glue.
• Deliverability checks: MX + SPF presence at a glance across many domains.

🤖 For AI agents (MCP)

Keyless, one call → a fused, structured record. Every input is described in the schema for programmatic/MCP use. Example MCP server config:

{
  "mcpServers": {
    "domain-intel": {
      "url": "https://mcp.apify.com/?tools=actors,docs,centorprat/domain-lookup-dns-mx-email"
    }
  }
}

Claude Code: claude mcp add --transport http apify "https://mcp.apify.com/?tools=actors,docs,centorprat/domain-lookup-dns-mx-email" --header "Authorization: Bearer <YOUR_APIFY_TOKEN>"

No extra setup: this Actor is callable from Claude, Cursor, ChatGPT or any MCP client through the Apify MCP server, and agents can find it on their own with the server's search-actors tool.

🚀 Ready-made tasks (one click)

Pre-configured runs for the most common jobs. Open one, change the input, run:

• MX & SPF Records Checker (Bulk Domains): Bulk MX, SPF, TXT, NS and A record lookup for any list of domains. See which domains receive email and have SPF set up.
• Find Contact Emails & Social Profiles from Domains: Get public contact emails, LinkedIn/X/Facebook links, homepage info and MX records for any list of company domains. Bulk enrichment.
• Bulk DNS Lookup: A, MX, NS & TXT Records: Resolve A, AAAA, MX, NS and TXT records for many domains in one call, with resolve/mail flags and homepage title. Keyless DNS API.

❓ FAQ

• Do I need an API key? No — DNS-over-HTTPS and the homepage fetch are keyless.
• How many domains per run? As many as you pass; billed per domain (plus the premium event when contacts are found).
• Where do emails/social come from? Only the domain's own public homepage HTML — no login, no third-party data.
• Why didn't it find social/emails for site X? Many sites load them via JavaScript or keep them off the homepage; this reads the homepage HTML only.
• Does it follow redirects? Yes (https first, then http), and reports the final URL + status.
• Is the data stored? No — fetched, composed, returned.
• Commercial use? The DNS and your-target homepage are public; see the note below on personal data.

⚠️ Personal data

emails may be personal data. Use it lawfully (e.g. legitimate B2B outreach, due diligence) and in line with GDPR/CAN-SPAM and the target site's terms. This actor only reads a domain's own public homepage; it stores nothing.

📜 Data & attribution

DNS via Google Public DNS-over-HTTPS; homepage data from the target domain's own site. Public data, composed and returned; nothing stored.

🔗 Related actors

Part of one suite of keyless, agent-ready composers by the same developer:

• Shopify Store Leads + App Audit (Reviews, Email, Pixels): Shopify stores by niche, verified and audited for missing apps (reviews, email/SMS, upsell, loyalty, chat, subscriptions), pixels and theme: scored leads with emails.
• Google Maps Leads + Website Audit for Agencies: local businesses from Google Maps audited for website, Google profile, reviews, booking and tracking gaps: scored, explained leads with phone and emails.
• FEMA Flood Zone & Property Risk API - Zillow/Redfin Enricher: FEMA flood zone + 18-hazard FEMA risk index + neighborhood demographics per US address, or for a whole Zillow/Redfin dataset.
• Wikipedia & Wikidata API - Entity Facts, Summary & Pageviews: Wikipedia + Wikidata + pageviews → one structured brief per company, person or place.
• Country Economic Data API - World Bank GDP, FX & Holidays: World Bank + FX + public holidays → one market brief per country.
• Weather, Air Quality & Earthquake Risk API by Location: live weather + air quality + earthquakes → one clear/caution/hazard verdict per point, worldwide.
• Aircraft Tracker API (ADS-B) - Approach & Military Alerts: aircraft approaching a point with CPA/ETA + military/unidentified flags and alerts.
• NARA Catalog Extractor: US National Archives catalog search → digital-object download URLs + metadata.