question phone numbers, general data question

Can anyone help me or give me pointers as to where to look? We have a list of phone numbers for access providers. We would like to give this list to our customers, and have the phone number closest to them be picked based upon their area code number and exchange number. I don't know how the exchange numbers are related in terms of distance, however. Any help appreciated.

Please email me?
fschiff_at_dorsai.org Received on Sun Oct 22 1995 - 00:00:00 CET