Free tools for web professionals.
DNS lookups and more, no login required.
Handy utilities we built for our own team — available to everyone. No account, no rate limits, no catch.
These are the same diagnostic tools our engineers reach for every day when onboarding a new hosting client, chasing down an email delivery problem, or checking a certificate before it lapses. Agencies use them to audit a domain's setup before taking over client work; IT teams use them to confirm DNS propagation or catch an expiring SSL certificate before it causes an outage. We built them for internal use first, so they're fast, accurate, and kept up to date — then decided there was no reason to keep them behind a login. More tools get added as we build them for ourselves.
What's available right now.
DNS Lookup
Query all DNS records for any domain — A, AAAA, CNAME, MX, TXT, NS, SOA, SPF, DMARC and more. Useful for diagnosing email issues, verifying DNS propagation, and auditing domain configuration.
Run a lookupSSL Certificate Check
Check the SSL certificate for any domain — expiry date, issuer, SANs, and chain validity. Know before your clients do when a cert is about to expire.
Check a certificateWHOIS Lookup
Look up registrar details, registration and expiry dates, and nameservers for any domain. Handy for checking domain availability and ownership before a client engagement.
Run a WHOIS lookupName Server Lookup
Look up the name servers for any domain, straight from the registry, plus its SOA record. Confirm a DNS delegation or migration has propagated correctly.
Run a name server lookup