SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
office-speed.nl
SSL/TLS Certificate
SSL/TLS Certificate for office-speed.nl
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- office-speed.nl
- Valid from
- Oct 30, 2025
- Valid until
- Jan 28, 2026 (expired 217 days ago)
- Public key
- RSA 4096-bit
- Serial
- 05402EE5968B5CAAD081E63B96C0CD8C41FD
- SHA-256 fingerprint
- 85:67:2C:EE:03:F5:EE:7B:DC:F2:F0:AF:BF:6D:03:D7:C7:10:28:D1:F5:6F:5B:E8:70:E9:57:54:4F:EA:A4:70
- Chain
- R13 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
This certificate has been served since Aug 12, 2026.
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Uptime
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DNS changes
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TLS certificate
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