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 12u.biz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 12u.biz
- Valid from
- Jun 5, 2026
- Valid until
- Sep 3, 2026 (44 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053176F589F78A1EC46CD131EFA9832BE5CE
- SHA-256 fingerprint
- 71:76:BE:2E:3A:7B:EC:6C:72:5C:A6:68:AA:7E:EA:AC:64:41:E3:DE:49:7B:10:46:27:0F:74:F1:C5:BE:13:9B
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.