Network Toolkit
DNS, WHOIS, SSL, blacklist, HTTP headers, email auth and domain health scoring — all free, in one place.
No sign-up Never logged Instant results
WHOIS Lookup
Registrar, creation/expiration dates, and name servers.
Everything You Need to Diagnose a Domain
Network & DNS
WHOIS, full DNS record lookup, SSL certificate status, blacklist reputation, HTTP security headers, and domain valuation.
Email Authentication
Inspect MX, SPF, DKIM, and DMARC records to confirm your mail is properly signed and authorized.
Domain Health Score
A composite score across DNS, security, and email authentication so you know exactly what to fix first.
Frequently Asked Questions
Common questions about our free network toolkit.
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