SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sm-paderborn.net
SSL/TLS Certificate
SSL/TLS Certificate for sm-paderborn.net
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- sm-paderborn.net
- Valid from
- Aug 24, 2026
- Valid until
- Mar 10, 2027 (121 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 80837BBBD8E5F2257D29E72AC653943D
- SHA-256 fingerprint
- DD:6A:F1:D9:6F:06:1E:68:9C:DC:60:E8:3F:D9:09:04:25:1D:64:49:C9:22:24:B8:37:FF:86:A4:7A:2A:D9:8C
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by sm-paderborn.net's certificate expiring
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Uptime
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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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