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 usf.cat
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- mv2019091017001.dnssw.net
- Valid from
- Sep 29, 2026
- Valid until
- Dec 28, 2026 (74 days remaining)
- Public key
- EC 256-bit
- Serial
- 05DB9107EF9F3B8AE33F1220F1AF39D93C5E
- SHA-256 fingerprint
- 3E:80:2C:BE:32:12:94:C4:2A:16:F0:7C:11:55:07:EE:C9:B3:06:19:2F:3A:AC:8D:76:91:D1:D0:9E:8D:4D:1E
- Chain
- YE1 → Root YE → ISRG Root X2 → 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 Oct 2, 2026.
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DNS changes
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TLS certificate
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