SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jimlewis.org
SSL/TLS Certificate
SSL/TLS Certificate for jimlewis.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.jimlewis.org
- Valid from
- Sep 13, 2026
- Valid until
- Dec 12, 2026 (77 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0692D290D47B25AB08FCC018010544F59EE0
- SHA-256 fingerprint
- 4C:96:62:50:73:D9:C0:01:F1:79:7C:CF:C9:FF:AA:6B:75:1A:C1:1F:FF:5E:30:C0:3D:CD:22:34:3D:D2:41:1E
- 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.
This certificate has been served since Sep 16, 2026.
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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, DNSSEC, CNAME 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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