Here’s a mash-up of Google Maps with an Area Code and Exchange finding service (called NPA-NXX in the schema used by telephone providers in the US). I tried it and got great results on five random searches. When one enters in the appropriate information and clicks search, a Google Map with a pin showing the general vicinity of that exchange is returned. I hope this expands to other countries.
Phone Exchange Lookup – [RMLabs.net]
