SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
testa-computer.com
SSL/TLS Certificate
SSL/TLS Certificate for testa-computer.com
Untrusted chain- Issued by (CA)
- Sectigo Limited
- Subject
- testa-computer.com
- Valid from
- Sep 13, 2025
- Valid until
- Oct 14, 2026 (41 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 89E3FE32D2FAB80F6D527EBE9EF1413A
- SHA-256 fingerprint
- 37:53:C4:0E:8A:A8:8A:E6:13:04:C1:34:FD:FA:A7:B2:59:FD:09:0C:AC:79:2B:12:F6:80:32:C6:96:72:DD:FD
- Chain
- —
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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