SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zona1.guru
SSL/TLS Certificate
SSL/TLS Certificate for zona1.guru
Valid- Issued by (CA)
- Google Trust Services
- Subject
- zona1.guru
- Valid from
- Jul 20, 2026
- Valid until
- Oct 18, 2026 (34 days remaining)
- Public key
- EC 256-bit
- Serial
- 0B5ED16A80E417411317E6A584542EE2
- SHA-256 fingerprint
- 3F:47:BB:29:4F:41:17:44:66:66:F6:75:32:4A:A6:8C:9D:43:AA:24:44:23:B1:01:46:BD:70:39:6B:BB:1B:43
- 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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