SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ja-transport.org
SSL/TLS Certificate
SSL/TLS Certificate for ja-transport.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ja-transport.dk
- Valid from
- Oct 18, 2026
- Valid until
- Jan 16, 2027 (87 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 067B856C1F5508B8782B027577EC96D36F4D
- SHA-256 fingerprint
- AA:7D:65:F2:DB:02:39:A7:F8:5E:7A:2A:81:68:8A:D9:65:52:6D:A7:52:D5:B4:C8:CB:E3:7E:AD:90:0E:13:31
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 21, 2026.
Never get surprised by ja-transport.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ja-transport.org 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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.