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 gicon.cnt.br

Valid
Issued by (CA)
Let's Encrypt
Subject
gicon.cnt.br
Valid from
Jul 10, 2026
Valid until
Oct 8, 2026 (74 days remaining)
Public key
EC 256-bit
Serial
05F3C8926BBE4CE77909425EFD124989BB06
SHA-256 fingerprint
87:0C:24:2C:77:60:5C:B7:EC:36:35:E9:73:05:62:0D:9C:F9:46:83:0C:76:CF:2E:C5:9B:B1:E2:2D:38:A1:D5
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
gicon.cnt.br, www.gicon.cnt.br

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

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This is today's certificate. Turn on monitoring and we'll watch gicon.cnt.br continuously, notifying you the moment anything moves across all three signals:

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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