SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
h-saitou-clinic.com
SSL/TLS Certificate
SSL/TLS Certificate for h-saitou-clinic.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- h-saitou-clinic.com
- Valid from
- Nov 3, 2026
- Valid until
- Feb 1, 2027 (77 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0675FAE456E7B21A601F7E6231DA2967527A
- SHA-256 fingerprint
- AF:58:26:79:04:00:87:1D:17:DC:E8:03:AA:B4:0A:5B:08:91:F5:D7:F9:DB:FB:31:68:14:28:57:63:8C:70:74
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Nov 10, 2026.
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Uptime
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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.
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