SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sakaguchi-clinic.com
SSL/TLS Certificate
SSL/TLS Certificate for sakaguchi-clinic.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sakaguchi-clinic.com
- Valid from
- Jun 13, 2026
- Valid until
- Sep 11, 2026 (36 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 059E0776E23573C7DBDECB60E79DB1D62BD0
- SHA-256 fingerprint
- 82:B5:02:0F:0E:16:4B:C3:AA:70:9C:8C:C6:B0:C3:A9:C3:B5:9D:BF:1B:D0:B5:D1:10:31:7C:AB:02:FB:F0:C0
- 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.
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Uptime
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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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