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 per-i.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.per-i.de
- Valid from
- Sep 2, 2025
- Valid until
- Sep 16, 2026 (39 days remaining)
- Public key
- RSA 2048-bit
- Serial
- F86A178B0F8B34C97FDA09CFFD1733ED
- SHA-256 fingerprint
- D1:56:CF:98:36:15:CC:4B:74:3A:1F:A8:35:1F:8B:35:21:D5:FB:5F:36:54:7B:27:C0:E0:4F:C6:B6:CB:B6:5A
- 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.
This certificate has been served since Jul 28, 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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