SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gu-signal.si
SSL/TLS Certificate
SSL/TLS Certificate for gu-signal.si
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- gu-signal.si
- Valid from
- Jun 10, 2026
- Valid until
- Sep 8, 2026 (30 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 060EC2B9A0235E2313812EABC7B79B537D58
- SHA-256 fingerprint
- DB:C8:82:29:46:8A:F5:F8:FA:2C:BF:BC:16:7F:0D:AD:B8:79:7D:6E:80:87:80:EB:DA:61:1E:3B:A5:7D:D4:4B
- 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 Aug 9, 2026.
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Uptime
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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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