Domain Expiry, WHOIS & DNS Lookup: Failed Runs Cost Nothing

Bulk WHOIS & DNS Checker - SSL Expiry, Domain, MX, SPF, DMARC

neverempty/domain-lookup

For lead scoring, security ops, M&A diligence and SSL alerts: one row per domain with the registration record, nameservers, mail servers, SPF and DMARC policy and the TLS certificate - and the reason when a value is missing. Asking the responsible registry answered for 17 of 20 domains, not 5.

Tech Stack Detector & WHOIS, SSL Checker: BuiltWith Alternative

fguiraud/website-tech-dns-whois-ssl

Detect any website's tech stack (7,000+ technologies, Wappalyzer & BuiltWith alternative) plus WHOIS domain age and expiry, DNS, SPF/DMARC, email provider, SSL certificate expiry, hosting, security grade and SEO audit. Bulk domains or a Google Sheet; one JSON per domain.

Point it at a list of domains. Get registrar/age, DNS, a real TLS handshake, and detectable tech — pay only for modules that return. No browser, no proxy bill.

WHOIS & RDAP Lookup: Bulk Domain Age, Expiry & Registrar

accountable_eel/domain-rdap-lookup

Bulk WHOIS lookup without an API key: check domain age and expiry date for a list of domains via RDAP, the official WHOIS successor. Get registrar, registration and expiry dates, nameservers, DNSSEC and abuse contact from the registry itself. A domain expiry date checker for Sheets or Clay.

FDA Recalls & Adverse Events Monitor returns food, drug and device recalls, drug and device adverse-event reports, and drug labels from openFDA — one flat, scored row per record for a date range you choose.

Bulk WHOIS Lookup - Domain Registration & Expiry

logiover/bulk-whois-rdap-lookup

Bulk WHOIS / RDAP lookup for thousands of domains: registrar, creation and expiry dates, status, nameservers and registrant org. Great for domain monitoring, expiry alerts, lead generation and due diligence. No API key, CSV/JSON export.

DNS, WHOIS, SPF/DMARC, SSL Domain Audit

jungle_synthesizer/dns-domain-audit

Bulk domain audit covering DNS records, WHOIS registration, SPF/DMARC/DKIM email auth, SSL certificate, and reverse DNS. No browser, no proxy -- pure Node, sub-second per domain.

Domain Intelligence: SPF, DMARC, SSL, WHOIS | $0.005/domain

glasswing/domain-intelligence-report

One audit-ready row per domain: DNS records, SPF, DMARC and DKIM, mail provider, TLS expiry, registrar, hosting IP, ASN, CDN and detected tech stack. No API keys needed. Export to CSV, JSON or Excel.

Subdomain Finder (Certificate Transparency)

webdatatools/subdomain-finder

Subdomain Finder enumerates every subdomain of a domain from Certificate Transparency logs (crt.sh, Cert Spotter) and resolves each one — one row per subdomain, no proxies needed.

SSL & Domain Expiry Monitor - Certificate + RDAP Checks

lowlanddata/ssl-domain-monitor

Certificate expiry and domain-registration expiry for a list of hosts, one row each, with a plain list of what is wrong. A real TLS handshake and RDAP - no third-party checking API, no rate limit.

Bulk DNS Record Lookup: A, MX, TXT, NS, CNAME & SOA

accountable_eel/dns-record-lookup

Bulk DNS lookup: domains, without API key. A, AAAA, MX, TXT, NS, CNAME, SOA records, DNSSEC status, via Cloudflare DNS-over-HTTPS. SPF DKIM DMARC check, email provider by domain, mail security score. mxtoolbox/dig alternative online for Google Sheets. Charged per domain that resolves; NXDOMAIN free.