SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gtc-spb.ru
SSL/TLS Certificate
SSL/TLS Certificate for gtc-spb.ru
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- gtc-spb.ru
- Valid from
- Mar 22, 2026
- Valid until
- Jun 20, 2026 (expired 75 days ago)
- Public key
- RSA 2048-bit
- Serial
- 056D43543F85F86B23D2A71B87C19B9CAC35
- SHA-256 fingerprint
- 97:07:56:91:32:22:10:59:06:9B:9A:79:0A:0F:77:14:A0:0D:98:D5:FA:73:65:D3:92:2F:97:C1:E1:BE:C8:BB
- Chain
- R12 → 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
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DNS changes
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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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