SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
det-ex.fr
SSL/TLS Certificate
SSL/TLS Certificate for det-ex.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- det-ex.fr
- Valid from
- Nov 2, 2026
- Valid until
- Jan 31, 2027 (78 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 061C3866AC63C98478877DF4047860157248
- SHA-256 fingerprint
- 9C:91:CE:C5:0B:45:5A:B1:FF:39:1B:F3:1B:42:68:46:24:4D:8C:52:1A:4F:30:A6:44:A8:EC:64:42:92:B2:77
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Nov 4, 2026.
Never get surprised by det-ex.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch det-ex.fr continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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