SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
alp-active.ch
SSL/TLS Certificate
SSL/TLS Certificate for alp-active.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- alp-active.ch
- Valid from
- Sep 16, 2026
- Valid until
- Dec 15, 2026 (44 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0500486269902B34ACB5C7C2822D203B8192
- SHA-256 fingerprint
- 1B:7A:44:DD:76:11:57:76:F2:60:6F:F9:F4:C4:D7:71:05:F9:8A:06:7D:CB:C0:E9:F0:CC:4F:05:3C:1D:35:55
- Chain
- YR1 → Root YR → ISRG Root X1
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 Aug 20, 2026.
Never get surprised by alp-active.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch alp-active.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.