SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for tana.app
Valid- Issued by (CA)
- Amazon
- Subject
- tana.app
- Valid from
- Aug 8, 2026
- Valid until
- Feb 21, 2027 (106 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 04B12B5AB8823157224F6B24F0C736AC
- SHA-256 fingerprint
- 02:0C:17:4F:D1:9F:61:65:53:FA:A4:39:5F:12:02:62:28:C2:AA:28:8D:93:DB:A2:18:2C:B4:FA:63:00:9A:DC
- Chain
- Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 29, 2026.
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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