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 x-pt.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- x-pt.jp
- Valid from
- Jul 18, 2026
- Valid until
- Oct 16, 2026 (67 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05B5B71702E14C46077981254A0883F64EEE
- SHA-256 fingerprint
- FA:1B:36:29:5C:6A:CD:77:58:BC:3F:31:B6:FB:52:14:9E:4E:0F:BE:31:CD:5B:90:7D:D1:A5:14:79:71:F0:99
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by x-pt.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch x-pt.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.