Visual traceroute may have misplaced routers. Geographical route of hops used in the Visual Traceroute tool is based on third-party publicly accessible IP geo-location services. There are rare cases when actual geo-location data in those services is incorrect and thereof the visual geographical presentation of traceroute will be incorrect as well. For example, a router of a tier 1 network in Europe with incorrect IP geo-location record pointing to USA will make the Visual Traceroute tool to show geographical route going to USA and then back to Europe to a next hop - router in the same data center with correct IP geo-location record.
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