SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
tex-net.jp
SSL/TLS Certificate
SSL/TLS Certificate for tex-net.jp
Self-signed- Issued by (CA)
- tex-net.jp
- Subject
- tex-net.jp
- Valid from
- Oct 5, 2020
- Valid until
- Oct 5, 2021 (expired 1833 days ago)
- Public key
- RSA 2048-bit
- Serial
- 01A42F27DE
- SHA-256 fingerprint
- A0:28:17:19:B8:0A:FA:3C:03:5A:FF:BF:43:D1:9D:0A:28:33:35:FB:DE:A7:7B:28:7B:3E:E1:F7:FA:84:5B:52
- Chain
- tex-net.jp
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 Sep 24, 2026.
Never get surprised by tex-net.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch tex-net.jp 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.