SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gcr-immo.fr
SSL/TLS Certificate
SSL/TLS Certificate for gcr-immo.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- gcr-immo.fr
- Valid from
- Sep 22, 2026
- Valid until
- Dec 21, 2026 (39 days remaining)
- Public key
- EC 256-bit
- Serial
- 05CD8B76EA31ED4DF40B5EE81381708D0DDC
- SHA-256 fingerprint
- 4F:C5:5C:BF:2A:AB:BA:0F:1C:2D:F7:83:40:FF:0A:4A:C6:2A:24:74:12:FA:DA:D1:6C:31:BB:35:88:0B:94:43
- Chain
- YE2 → 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.
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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, 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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