WebSentinel

How it works Check History Method Limits

Offline

Check

Paste an address. Only the origin is sent.

Check an origin

Website address

scheme://host:port

No login, no exploit, no private-network scan.

Checker

Checker: Contacting
RDAP: Contacting
API base

What a check reads

Certificate: The TLS certificate the server presents, who issued it, and when it expires.
Registration: The RDAP record for the registered domain: its age, last update, and DNSSEC.
DNS: The addresses the name resolves to and whether mail records are published.
Page: The first response from the origin, its status, and any redirects.