CaptainDNS
DNS management, diagnostics & monitoring in one platform.
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Matthieu Espaze

CaptainDNS - DNS management, diagnostics & monitoring in one platform.

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CaptainDNS lets you diagnose DNS zones and audit email security records, SPF, DKIM, DMARC, MTA-STS, BIMI and DNSSEC, for free. Unlike basic DNS checkers, it covers the full resolution chain across 18 resolvers on 4 continents. Already used to analyse 48K+ domains, it gives developers and IT teams actionable diagnostics in one place, without switching between multiple tools.

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Matthieu Espaze
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We built CaptainDNS out of frustration. Every time we hit a DNS issue, we ended up juggling between 4 or 5 different tools to figure out what was actually broken, and even then, the answers weren't clear. So we built one platform that covers the full chain: zone diagnostics, SPF, DKIM, DMARC, MTA-STS, BIMI and DNSSEC, checked across 18 resolvers on 4 continents. No more guessing where the problem is. 48K+ domains analysed so far. Would love to hear what you think, and what you'd want to see next.