DNS Record & Whois Lookup

DNS Record & Whois Lookup instantly retrieves all DNS records and WHOIS registration data for any domain. Whether you're auditing infrastructure, verifying a migration, checking domain ownership, or building bulk domain intelligence pipelines — this tool gives you everything in one row per domain.

Unlike tools that only check one or two record types, this actor queries all 13 DNS record types (A, AAAA, MX, CNAME, TXT, NS, PTR, SOA, SRV, CAA, NAPTR, DS, TLSA) and pairs each domain with full WHOIS data — registrar, registrant, admin contacts, dates, status, and nameservers — in a single run.

Use cases include:

• Domain audits — check all DNS records and registration details for hundreds or thousands of domains at once
• Migration verification — confirm DNS records are correctly set after a domain or hosting migration
• Email deliverability checks — verify MX and TXT (SPF/DKIM/DMARC) records are correctly configured
• Security audits — identify missing CAA records, check DNSSEC (DS/TLSA), and detect misconfigurations
• Domain expiry monitoring — bulk-check WHOIS expiry dates to catch domains about to lapse
• Ownership & contact research — look up registrant and admin contact details for any domain list
• Competitive research — quickly look up the full DNS and registration profile behind any list of domains

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Features

• 13 DNS record types — A, AAAA, MX, CNAME, TXT, NS, PTR, SOA, SRV, CAA, NAPTR, DS, TLSA — all checked automatically
• Full WHOIS data — registrar, IANA ID, abuse contacts, dates, status, nameservers, registrant, and admin contacts
• SOA flattened — SOA record returned as a single readable string (mname, rname, serial, refresh, retry, expire, minttl)
• DS & TLSA with silent fallback — DNSSEC and DANE records attempted; silently skipped if not supported or not present
• URL-tolerant input — input https://www.example.com/page and it automatically extracts example.com
• Deduplication — duplicate domains in input are silently deduplicated before processing
• Bulk-ready — handles 1 to 50,000+ domains efficiently with concurrency control and budget capping
• Minimal dependencies — uses Node.js built-in dns/promises for DNS; whoiser for WHOIS parsing

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How to Use

Input

Field	Type	Required	Description
domains	String list	Yes	Domains to check (e.g. example.com). URLs like https://www.example.com/page are automatically cleaned to bare domain.

Example input:

{
    "domains": [
        "onescales.com"
    ]
}

Output

One row per domain. Every row includes:

DNS columns (one per record type):

Field	Description
dns_a	A records (IPv4 addresses)
dns_aaaa	AAAA records (IPv6 addresses)
dns_mx	MX records (priority + exchange)
dns_cname	CNAME records
dns_txt	TXT records (SPF, DKIM, DMARC, etc.)
dns_ns	NS records
dns_ptr	PTR records (reverse DNS)
dns_soa	SOA record (flattened: mname, rname, serial, refresh, retry, expire, minttl)
dns_srv	SRV records (priority, weight, port, target)
dns_caa	CAA records (certificate authority authorization)
dns_naptr	NAPTR records
dns_ds	DS records (DNSSEC delegation signer)
dns_tlsa	TLSA records (DANE certificate association)

WHOIS — Registrar:

Field	Description
whois_registrar	Registrar name
whois_iana_id	Registrar IANA ID
whois_registrar_url	Registrar website
whois_registrar_abuse_email	Registrar abuse contact email
whois_registrar_abuse_phone	Registrar abuse contact phone

WHOIS — Domain:

Field	Description
whois_created	Domain creation date
whois_expires	Domain expiry date
whois_updated	Last updated date
whois_status	Domain status flags (e.g. clientTransferProhibited)
whois_nameservers	Registered nameservers

WHOIS — Registrant:

Field	Description
whois_registrant_name	Registrant name
whois_registrant_org	Registrant organization
whois_registrant_address	Registrant address (street, city, state, postal — comma-joined)
whois_registrant_country	Registrant country
whois_registrant_phone	Registrant phone

WHOIS — Admin Contact:

Field	Description
whois_admin_name	Admin contact name
whois_admin_org	Admin contact organization
whois_admin_email	Admin contact email
whois_admin_country	Admin contact country

Meta:

Field	Description
domain	The input domain
checkedAt	ISO 8601 scan timestamp
error	Error message if the entire domain lookup failed

Example output row:

{
    "domain": "onescales.com",
    "checkedAt": "2026-05-12T07:56:20.623Z",
    "dns_a": "23.227.38.65",
    "dns_aaaa": "",
    "dns_mx": "1 aspmx.l.google.com | 10 alt3.aspmx.l.google.com | 10 alt4.aspmx.l.google.com | 5 alt1.aspmx.l.google.com | 5 alt2.aspmx.l.google.com",
    "dns_cname": "",
    "dns_txt": "pinterest-site-verification=5f70be70e48c31b017fad538d924767e | v=spf1 include:_spf.hostedemail.com include:_spf.google.com ~all | apple-domain-verification=I7MvaXQQ7pwZC7MWa9SgCvFqNva8I955BY-KkRsxpIw | openai-domain-verification=dv-Y9cDXv64Bj8Z6h43mpki1rgt",
    "dns_ns": "carter.ns.cloudflare.com | bonnie.ns.cloudflare.com",
    "dns_ptr": "",
    "dns_soa": "mname=bonnie.ns.cloudflare.com rname=dns.cloudflare.com serial=2403632311 refresh=10000 retry=2400 expire=604800 minttl=1800",
    "dns_srv": "",
    "dns_caa": "",
    "dns_naptr": "",
    "dns_ds": "",
    "dns_tlsa": "",
    "whois_registrar": "Cloudflare, Inc.",
    "whois_iana_id": "1910",
    "whois_registrar_url": "http://www.cloudflare.com",
    "whois_registrar_abuse_email": "registrar-abuse@cloudflare.com",
    "whois_registrar_abuse_phone": "+1.6503198930",
    "whois_created": "2022-10-11T10:20:28Z",
    "whois_expires": "2028-10-11T10:20:28Z",
    "whois_updated": "2023-02-13T02:38:06Z",
    "whois_status": "clientTransferProhibited",
    "whois_nameservers": "bonnie.ns.cloudflare.com | carter.ns.cloudflare.com",
    "whois_registrant_name": "",
    "whois_registrant_org": "",
    "whois_registrant_address": "",
    "whois_registrant_country": "",
    "whois_registrant_phone": "",
    "whois_admin_name": "",
    "whois_admin_org": "",
    "whois_admin_email": "",
    "whois_admin_country": ""
  }

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Support

For bugs, feature requests, or questions — reach us at https://docs.google.com/forms/d/e/1FAIpQLSfsKyzZ3nRED7mML47I4LAfNh_mBwkuFMp1FgYYJ4AkDRgaRw/viewform?usp=dialog

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