SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kohoku-ku.jp
SSL/TLS Certificate
SSL/TLS Certificate for kohoku-ku.jp
Valid- Issued by (CA)
- Amazon
- Subject
- kohoku-ku.jp
- Valid from
- Oct 3, 2026
- Valid until
- Apr 18, 2027 (161 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 02220D193D95C4864CDF336BF72D06D7
- SHA-256 fingerprint
- 70:B2:85:38:A1:38:2D:00:45:FB:96:31:18:04:D4:56:E7:52:A4:2D:FB:74:21:A3:25:C5:D9:BE:28:51:3F:9B
- Chain
- Amazon RSA 2048 M01 → 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.
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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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