SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
urtk-mephi.ru
SSL/TLS Certificate
SSL/TLS Certificate for urtk-mephi.ru
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- urtk-mephi.ru
- Valid from
- Oct 16, 2026
- Valid until
- Jan 14, 2027 (64 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0675BBC9F74BD32602C1443BD24CE1DD84F5
- SHA-256 fingerprint
- 2F:9E:B1:90:63:64:B3:0A:6A:8C:D6:62:DF:59:F9:47:09:90:89:61:51:35:76:A0:E2:76:9A:00:C7:5A:7C:95
- 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 Nov 11, 2026.
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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, 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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