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 saastool.site

Valid
Issued by (CA)
Google Trust Services
Subject
saastool.site
Valid from
Aug 28, 2026
Valid until
Nov 26, 2026 (48 days remaining)
Public key
EC 256-bit
Serial
3CB8A7B6EF9AD3430EB72E0BE9B07BE0
SHA-256 fingerprint
0D:A8:F0:FD:84:01:62:9E:86:C7:8B:86:4B:D5:F7:A7:A6:F2:9D:4E:D3:74:B9:C3:E5:68:FA:F6:BC:87:20:A0
Chain
WE1 → GTS Root R4
Subject Alternative Names (1)
saastool.site

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 20, 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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