SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
tenri-gakudo.com
SSL/TLS Certificate
SSL/TLS Certificate for tenri-gakudo.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- tenri-gakudo.com
- Valid from
- Oct 8, 2026
- Valid until
- Jan 6, 2027 (57 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0512D503816E3CD45E470D1AE2A8F85513DA
- SHA-256 fingerprint
- 71:8B:91:27:99:27:C8:E1:DB:92:8B:96:BF:37:3B:1F:7C:FF:FB:8F:8E:EF:D2:A0:68:58:ED:1B:41:4F:3C:82
- 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.
Never get surprised by tenri-gakudo.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch tenri-gakudo.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, 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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