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 casa-28.com

Valid
Issued by (CA)
Google Trust Services
Subject
casa-28.com
Valid from
Jun 13, 2026
Valid until
Sep 11, 2026 (43 days remaining)
Public key
RSA 2048-bit
Serial
AC3A2073A12D4BFC1398AB374B00437A
SHA-256 fingerprint
EF:EF:9B:81:3C:ED:DF:70:FE:BF:E9:12:A7:37:D9:89:08:38:1D:37:E1:21:33:36:7E:4B:DD:5F:83:37:19:3C
Chain
WR1 → GTS Root R1
Subject Alternative Names (2)
casa-28.com, www.casa-28.com

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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