SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sec-mail.ch
SSL/TLS Certificate
SSL/TLS Certificate for sec-mail.ch
Valid- Issued by (CA)
- SwissSign AG
- Subject
- sec-mail.ch
- Valid from
- Jun 5, 2026
- Valid until
- Dec 20, 2026 (127 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 42CA53D424A1743A7EA6061D15D6E89E5D75ABCF
- SHA-256 fingerprint
- C2:85:D8:B1:59:A1:35:84:37:62:89:CC:6F:1C:98:BA:CC:7E:AE:EB:67:9C:6B:77:2D:B5:23:C1:3B:CB:93:33
- Chain
- SwissSign RSA TLS OV ICA 2022 - 1 → SwissSign RSA TLS Root CA 2022 - 1 → SwissSign Gold CA - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by sec-mail.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sec-mail.ch continuously, notifying you the moment anything moves across all three signals:
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, DNSSEC, CNAME 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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