Website & Email Domain Checker: SSL, DNS, SPF, DMARC, DKIM

Bulk WHOIS Domain Lookup: Age, Expiry, Registrar, DNS & SSL

fguiraud/bulk-whois-domain-lookup

Bulk WHOIS lookup for any list of domains or a Google Sheet: registrar, creation date, domain age, expiry date, registered or available, nameservers, DNS, MX, email provider, SPF/DMARC and SSL expiry. One flat row per domain, ready for Excel. RDAP + WHOIS for 1,000+ TLDs.

Website HTTPS & SSL Health Checker

pillowy_travel/website-https-ssl-health-checker

Checks HTTPS availability and SSL certificate health for given URLs

Check domain availability and fetch WHOIS records, DNS records, and SSL certificate details in one call. Supports bulk domain lists — useful for domain research, brand monitoring, and infrastructure audits.

Website domain name validator

saswave/website-domain-name-validator

Verify if a website is still up and running or if it contains a redirection to a new domain name. Data enrichment at scale.

Email Domain Blacklist Checker

trovevault/email-domain-blacklist-checker

Check any domain against 15 email blacklists (Spamhaus, SURBL, SpamCop, Barracuda and more) and validate SPF, DMARC and MX records. No API keys required. Export data, run via API, schedule and monitor runs, or integrate with other tools.

Bulk-check domains for email setup & authentication over DNS: MX + provider, SPF, DMARC policy, DKIM selectors, with a deliverability score. One JSON row per domain.

Domain Age Checker

automation-lab/domain-age-checker

Check domain age and registration dates in bulk using RDAP — the modern WHOIS replacement. Returns registration date, expiration date, registrar, nameservers, and age in days/years. Ideal for SEO analysis, fraud detection, and domain research.

Domain Health Checker: SPF, DKIM, DMARC, SSL & Security Headers

cobalt_relay/domain-health-checker

Bulk-check any list of domains for email deliverability (SPF, DKIM, DMARC, MTA-STS), SSL certificate expiry, DNSSEC and website security headers. Get a 0-100 score, an A-F grade, the mail and DNS provider, and plain-English fixes for every problem.

Domain Health Audit: DNS, WHOIS, SSL, SPF, DKIM & DMARC

apifmcpfactory/domain-health-audit

Audit 1 to 5,000 domains for DNS, WHOIS, SSL, HTTP and email-authentication problems, and get the exact DNS records to publish to fix each one. Scored, exportable, with a client-ready report. Validated against RFC 9989. For people and AI agents.

One row per company domain: email provider (Microsoft 365, Google Workspace...), SPF, DMARC and DKIM with an A-F grade, DNS host, HTTPS and SSL expiry, registrar and expiry date via RDAP, plus what changed since your last check.