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 at-a.ch
Self-signed- Issued by (CA)
- server37.hostfactory.ch
- Subject
- server37.hostfactory.ch
- Valid from
- Oct 4, 2026
- Valid until
- Oct 4, 2027 (350 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 725635F1D328F9FA15335F538582E3E36A42F4D6
- SHA-256 fingerprint
- E7:A6:9F:C6:B5:99:87:0C:25:99:C3:EC:7A:1C:C3:08:FF:FC:35:62:BB:6B:03:FB:FD:14:9F:AC:58:6B:B4:8C
- Chain
- server37.hostfactory.ch
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 15, 2026.
Never get surprised by at-a.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch at-a.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, 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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