How reliable is the result?
Detection is based on public network intelligence. Most commercial VPNs and proxies are identified, but no tool is perfect — there can be false positives, and private servers may go unflagged.
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Straight answers about what the scanner checks and what the result means.
What counts as a proxy?
Addresses are matched against continually updated lists of public proxies and anonymising services. Because those lists refresh on a schedule, very new proxies may not be listed yet.
Can a private server be missed?
Not directly. Private proxies are not in public lists. However, if they are hosted in a datacenter the address is still flagged as a hosting/VPN range.
What signals are checked?
An address is flagged when it belongs to a datacenter or hosting provider, appears on proxy lists, or is a published Tor exit node — all signals that traffic is passing through an intermediary rather than a home connection.