SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
t-topolsica.si
SSL/TLS Certificate
SSL/TLS Certificate for t-topolsica.si
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- t-topolsica.si
- Valid from
- Jul 23, 2026
- Valid until
- Oct 21, 2026 (63 days remaining)
- Public key
- EC 256-bit
- Serial
- 05D58E5F86391BF3203AF313F1AAB5CFBA1B
- SHA-256 fingerprint
- B1:4F:16:9F:A3:7F:38:2C:C0:70:5F:D8:45:AF:E4:48:AE:47:DF:04:F0:F8:77:97:C1:BC:26:A2:B1:C6:39:8B
- Chain
- YE1 → 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.
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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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