SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
aoyagi-cl.or.jp
SSL/TLS Certificate
SSL/TLS Certificate for aoyagi-cl.or.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- aoyagi-cl.or.jp
- Valid from
- Jul 30, 2026
- Valid until
- Oct 28, 2026 (84 days remaining)
- Public key
- EC 256-bit
- Serial
- 06F29C2384B0023ADCD8B180C9F71557FB1C
- SHA-256 fingerprint
- 19:4A:74:52:E9:17:E0:00:5A:9F:E2:EB:C4:C5:34:14:C7:CB:30:4D:2E:29:79:56:5A:E7:42:81:80:1F:E3:58
- Chain
- YE2 → Root YE → ISRG Root X2 → 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 aoyagi-cl.or.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch aoyagi-cl.or.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.