SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bur-tec.de
SSL/TLS Certificate
SSL/TLS Certificate for bur-tec.de
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- bur-tec.de
- Valid from
- May 5, 2021
- Valid until
- Aug 3, 2021 (expired 1930 days ago)
- Public key
- RSA 2048-bit
- Serial
- 045975D8CFFB345B7427CAA0A802AAF68512
- SHA-256 fingerprint
- EF:C0:5D:2C:0F:2F:B6:34:49:30:00:DE:32:90:6F:A3:D7:52:20:67:09:D6:30:90:51:87:14:55:D2:DA:8B:74
- Chain
- R3 → ISRG Root X1
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 Aug 22, 2026.
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DNS changes
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TLS certificate
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