SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
okuma-clinic.com
SSL/TLS Certificate
SSL/TLS Certificate for okuma-clinic.com
Hostname mismatch- Issued by (CA)
- Amazon
- Subject
- web.gogo.jp
- Valid from
- Jul 28, 2026
- Valid until
- Feb 10, 2027 (197 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 058816BCD27D71D99B812D883620765E
- SHA-256 fingerprint
- 02:E6:B1:BA:92:0D:4A:BA:71:EA:28:58:08:71:51:2A:39:CC:B8:BF:3D:7E:D4:12:57:B2:FE:37:A3:6F:CF:1C
- Chain
- Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by okuma-clinic.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch okuma-clinic.com 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.
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