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 hga.si
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- cpcalendars.hga.si
- Valid from
- Sep 6, 2026
- Valid until
- Dec 5, 2026 (63 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06B0C53497C8AA7AEC6C6D9479CF3627B80C
- SHA-256 fingerprint
- 77:E1:09:44:66:B8:00:76:FC:A8:16:92:4A:65:FE:2A:06:9C:11:AA:EB:CE:95:5B:25:B0:84:F1:7F:01:31:1B
- Chain
- YR2 → 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 Sep 22, 2026.
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This is today's certificate. Turn on monitoring and we'll watch hga.si 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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