Free tools
The same checks we run for clients, free for everyone.
We build monitoring tools and give them away, because better tooling raises the baseline for everyone. They are also the most honest sales pitch we have: run them against your own domains and see what they find.
DNS Canary
Monitors your domains for DNS record changes, validates SPF, DKIM and DMARC against the RFCs, and grades domain health A to F. Email alerts when something changes.
Open →SSL Sentinel
Watches TLS certificates for issuer, expiry, chain and protocol problems, grades them A to F, and warns you before anything lapses.
Open →Email Security
Deep analysis of SPF, DKIM, DMARC, MTA-STS, TLS-RPT and BIMI, including the real RFC 7208 lookup count. No login required.
Open →DNS Map
Discovers subdomains across certificate transparency logs, passive DNS and record enumeration, then shows which ones differ from the apex.
Open →DNS Propagation
Queries public resolvers around the world at once, so you can see a change rolling out rather than guess at it.
Open →Exit IPAM
IP address management with subnet planning, address maps and team access. In use internally, not yet opened up.