SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
active24.pl
SSL/TLS Certificate
SSL/TLS Certificate for active24.pl
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- active24.pl
- Valid from
- Apr 4, 2026
- Valid until
- Jul 3, 2026 (expired 37 days ago)
- Public key
- RSA 4096-bit
- Serial
- 05FF598946BBDBE152A094AEB2F97B60BB50
- SHA-256 fingerprint
- 8D:E5:6E:39:D2:9E:B0:78:6F:D0:D8:F6:5D:8F:5D:67:19:54:92:D5:79:64:A6:95:AC:C9:9A:DB:28:62:69:09
- 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
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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