SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gt-express.fr
SSL/TLS Certificate
SSL/TLS Certificate for gt-express.fr
Self-signed- Issued by (CA)
- gt-express.fr
- Subject
- gt-express.fr
- Valid from
- Jul 5, 2024
- Valid until
- Jul 5, 2025 (expired 382 days ago)
- Public key
- RSA 2048-bit
- Serial
- 023EC9E293
- SHA-256 fingerprint
- AE:58:0F:31:A5:85:E6:70:08:C8:A5:39:3B:8F:51:83:7A:10:DA:64:D2:E3:6A:88:12:C5:54:77:48:00:12:6A
- Chain
- gt-express.fr
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by gt-express.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch gt-express.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.