SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kasuga-clinic.com
SSL/TLS Certificate
SSL/TLS Certificate for kasuga-clinic.com
Valid- Issued by (CA)
- Japan Registry Services Co., Ltd.
- Subject
- www.kasuga-clinic.com
- Valid from
- Aug 3, 2026
- Valid until
- Oct 30, 2026 (81 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 102B59B09E4EF1A4D7208818D64937C6
- SHA-256 fingerprint
- 85:E5:0C:DA:54:DD:73:F2:5A:D3:16:49:CA:34:50:F9:41:9B:AD:35:8F:79:8C:E2:51:BB:AB:D4:24:F8:4D:43
- Chain
- JPRS DV RSA CA 2024 G1 → SECOM TLS RSA Root CA 2024
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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.
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