SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
42101.net
SSL/TLS Certificate
SSL/TLS Certificate for 42101.net
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- 55213.uk
- Valid from
- Oct 2, 2025
- Valid until
- Dec 31, 2025 (expired 202 days ago)
- Public key
- RSA 2048-bit
- Serial
- 05FA2706162CB409692C8DECF4F8B2B20931
- SHA-256 fingerprint
- D2:08:87:2A:CD:D2:6E:36:D8:67:B4:BE:3F:0F:3A:88:9E:9D:83:5B:08:87:34:3C:EA:ED:E0:F5:81:34:7E:F1
- Chain
- R12 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.