SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jeff-ferris.com
SSL/TLS Certificate
SSL/TLS Certificate for jeff-ferris.com
Valid- Issued by (CA)
- Google Trust Services
- Subject
- jeff-ferris.com
- Valid from
- Oct 13, 2026
- Valid until
- Jan 11, 2027 (87 days remaining)
- Public key
- EC 256-bit
- Serial
- 90091D7E13351D070EC8BD1A9D3605F4
- SHA-256 fingerprint
- 5E:C1:2A:4C:B3:97:A9:76:4F:A9:D9:70:3C:F4:58:9D:D4:CE:E9:77:63:42:75:5B:AF:02:E2:48:96:E0:8A:AA
- Chain
- WE1 → GTS Root R4
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 28, 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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