SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
justinrpennington.com
SSL/TLS Certificate
SSL/TLS Certificate for justinrpennington.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- justinrpennington.com
- Valid from
- Aug 7, 2026
- Valid until
- Nov 5, 2026 (53 days remaining)
- Public key
- EC 256-bit
- Serial
- 069D65617B9FF8B3D6CF233075C0DC9CE7FC
- SHA-256 fingerprint
- D4:67:E5:73:F1:90:D8:9A:FD:EC:9A:44:B4:50:7F:79:6A:63:45:2B:9A:19:52:92:69:F2:00:57:D4:D4:AD:3C
- Chain
- YE1 → 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
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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