SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for jtfg.dev
Valid- Issued by (CA)
- Google Trust Services
- Subject
- jtfg.dev
- Valid from
- Aug 31, 2026
- Valid until
- Nov 29, 2026 (66 days remaining)
- Public key
- EC 256-bit
- Serial
- FB0A7C271589D4371322662DD2D02E84
- SHA-256 fingerprint
- E0:A4:9C:98:96:E8:E5:7A:2B:2B:B7:49:4E:82:F5:E7:88:22:3C:39:9B:89:78:B5:BE:B6:EC:81:3E:EB:45:DF
- Chain
- WE1 → GTS Root R4
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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