SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ex-spec.jp
SSL/TLS Certificate
SSL/TLS Certificate for ex-spec.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ex-spec.jp
- Valid from
- Oct 12, 2026
- Valid until
- Jan 10, 2027 (83 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06D51C8E8733C0F88C0D299422DA931E8B9C
- SHA-256 fingerprint
- D0:4C:6C:D1:1E:BA:BA:F5:37:1A:1F:A7:8F:50:78:5E:E3:5B:47:AD:B8:3F:99:B5:D1:B4:04:95:70:7E:F2:E7
- 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.
Never get surprised by ex-spec.jp's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ex-spec.jp 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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