SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ch-check.ch
SSL/TLS Certificate
SSL/TLS Certificate for ch-check.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ch-check.ch
- Valid from
- Nov 6, 2026
- Valid until
- Feb 4, 2027 (81 days remaining)
- Public key
- EC 256-bit
- Serial
- 05212284584B926BEA908D2C3D37CDE68D5C
- SHA-256 fingerprint
- 3A:4D:81:6A:4E:B2:60:07:91:06:CA:7B:B7:A8:0F:CA:B0:97:B1:B4:5E:CD:24:7E:1D:12:FC:BA:1C:24:C5:EF
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ch-check.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ch-check.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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