Search local numbers by location

I have noticed when ordering numbers in GoToAdmin that while you can search for a specific area code or prefix when ordering new numbers, you cannot get a list of local numbers based on the submitted service address like in the legacy PBX. For partners who manage multiple accounts across multiple areas, we are required to know the local prefix or prefixes for the service address's area. Again, the legacy PBX let's us search for numbers based on an address, so it would be convenient if GoToAdmin allowed that as well, or at least found the prefixes local to that address so we wouldn't have to search carriers ourselves.