SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ert-electricite.fr
SSL/TLS Certificate
SSL/TLS Certificate for ert-electricite.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ert-electricite.fr
- Valid from
- May 27, 2026
- Valid until
- Aug 25, 2026 (33 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 06735909CB61461F30CB6B91BDE43C25D107
- SHA-256 fingerprint
- B9:50:B2:40:AD:E7:4D:D6:90:AF:62:3D:AC:F0:12:05:88:DC:C4:74:EA:2C:A0:C1:D9:05:5C:0E:0E:5A:3E:95
- Chain
- R13 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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, DNSSEC, CNAME 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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