SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

alteoper.de

SSL/TLS Certificate

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SSL/TLS Certificate for alteoper.de

Valid
Issued by (CA)
Sectigo Limited
Subject
www.alteoper.de
Valid from
Mar 9, 2026
Valid until
Feb 5, 2027 (199 days remaining)
Public key
RSA 2048-bit
Serial
3CAFF0640A09C721F845C0714748592C
SHA-256 fingerprint
21:46:79:EB:90:5C:EA:57:97:C9:CA:96:6B:64:E4:27:19:6A:D3:48:2D:E2:11:32:66:51:E9:61:75:48:87:ED
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Subject Alternative Names (2)
alteoper.de, www.alteoper.de

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.