SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for ostim.com.tr

Expired
Issued by (CA)
Fortinet
Subject
ostim.com.tr
Valid from
Sep 4, 2024
Valid until
Sep 4, 2025 (expired 377 days ago)
Public key
RSA 2048-bit
Serial
3B495F96077C9DD548A87FAD3A772E0E4AA297B9
SHA-256 fingerprint
91:D0:DC:BD:37:D7:72:F6:75:3B:B3:79:56:BE:6B:74:7A:9F:AD:6A:D6:A1:67:47:2D:B5:C1:BC:0F:B3:3F:29
Chain
FGT80FTK21037983
Subject Alternative Names (2)
ostim.com.tr, www.ostim.com.tr

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by ostim.com.tr's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ostim.com.tr 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.