1. A replica routing system, comprising: a processor; and a plurality of routers; the processor being programmed to transmit a request to one of the routers; the router being programmed: A) to receive the request; B) to compare an address from which the request purports to originate with coverage zone information for the router that received the request and a hierarchy of the plurality of routers that are its progeny, the coverage zone information being stored in a database associated with the router that received the request; C) if the router that received the request is not within a preferred coverage zone as identified in step B, to redirect the processor to a router for which the address is within the preferred coverage zone; and D) if a router is not identified in step b for which the address is within a preferred coverage zone, but a router other than the router that received the request is identified in step b for which the address is within a regular coverage zone, to redirect the processor to the router for which the address is within the regular coverage zone.