SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
okusama-j.jp
SSL/TLS Certificate
SSL/TLS Certificate for okusama-j.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- okusama-j.jp
- Valid from
- Oct 20, 2026
- Valid until
- Jan 18, 2027 (75 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05284F68D08197D7BF7433B7997B89CF4A49
- SHA-256 fingerprint
- DA:A2:6A:D5:2F:38:E8:76:D5:17:E9:55:06:83:1A:98:7F:66:CE:2A:1E:34:35:5A:18:3A:56:FC:73:AE:00:D2
- 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.
Never get surprised by okusama-j.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch okusama-j.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, 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.