SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dev-app.fr
SSL/TLS Certificate
SSL/TLS Certificate for dev-app.fr
Valid- Issued by (CA)
- Google Trust Services
- Subject
- dev-app.fr
- Valid from
- Oct 11, 2026
- Valid until
- Jan 9, 2027 (86 days remaining)
- Public key
- EC 256-bit
- Serial
- 54244BF58EF960250E11FF5279C48039
- SHA-256 fingerprint
- 55:80:4B:F9:7C:21:12:EB:A0:4B:1B:4A:AF:51:43:70:F3:FB:D4:7C:71:39:74:DC:D9:C3:7A:2D:39:B1:AD:86
- Chain
- WE1 → GTS Root R4
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 10, 2026.
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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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