SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
teikyo-u-mcc.com
SSL/TLS Certificate
SSL/TLS Certificate for teikyo-u-mcc.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- teikyo-u-mcc.com
- Valid from
- Oct 28, 2026
- Valid until
- Jan 26, 2027 (81 days remaining)
- Public key
- EC 256-bit
- Serial
- 06F8D9E3B57108453131E2F10D0F5290245F
- SHA-256 fingerprint
- 5D:97:37:75:27:42:40:3A:8A:64:25:65:BC:01:2F:21:81:C5:1B:E9:0A:66:58:0A:6C:40:A5:A1:5A:CD:C5:47
- Chain
- YE2 → Root YE → ISRG Root X2 → 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, 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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