Impossible Travel Detection With IP Location: A Practical Guide
Use IP geolocation carefully to detect suspicious account logins that appear too far apart in too little time.
What impossible travel means
Impossible travel detection flags logins that appear from locations too far apart to be realistic within the time between events.
For example, an account logging in from India and then minutes later from another continent may deserve review.
Why false positives happen
VPNs, mobile routing, corporate gateways, CDNs, remote desktops, and inaccurate city data can create impossible-looking patterns.
A new country is a stronger signal than a new city, but it still should not be treated as proof by itself.
Better response
Use step-up authentication, session review, or notification before blocking. Combine IP location with device, browser, and account history.
Crafzo IP Lookup helps analysts quickly inspect the source IP behind a login alert.
Frequently Asked Questions
Should impossible travel always lock an account?
No. It should usually trigger verification or review unless other signals confirm compromise.
Can VPNs trigger impossible travel?
Yes. VPN exits can make a user appear to move countries instantly.
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