SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for om.ua
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- om.ua
- Valid from
- Mar 15, 2026
- Valid until
- Jun 13, 2026 (expired 57 days ago)
- Public key
- RSA 4096-bit
- Serial
- 05C3832CCF7C4790995F5C6AAC3249A117B7
- SHA-256 fingerprint
- 60:76:C4:E0:B8:71:B1:69:18:20:2C:45:AC:AF:FA:78:9F:6C:00:3E:28:15:F5:C5:6A:15:C4:BF:7C:82:C2:1D
- Chain
- R13 → 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 4, 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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