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 tekla-professionals.nl

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
web1.boonit.nl
Valid from
Jul 31, 2026
Valid until
Oct 29, 2026 (33 days remaining)
Public key
RSA 4096-bit
Serial
06AC354BC4EE63A77A056C5D7FDB435E4DB3
SHA-256 fingerprint
24:49:D8:19:4B:94:F9:E4:EF:C3:3C:48:B9:B1:CA:F0:74:3B:2F:79:DD:0C:D5:18:2D:61:32:0A:28:DD:D1:7A
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (1)
web1.boonit.nl

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 Sep 19, 2026.

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TLS certificate

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