Deventer is pretty much on the other side of Holland. I like to use Regio Map to find out where someone lives. Usually when you mouse over the name you see the region number (first part of the phone number) and you can look it up on the map. Deventer unfortunatly doesn't have it, but google told me the number is 0570, so east of Holland. Mine would be 0342 when I am in Holland =)