nExchanges MD 0.1 - nExchanges.MD is a Formula panel of Maryland telephone exchanges. If you need to look up an exhange, then this is for you. This allows you to find out where a telephone number is located. Simply enter the first 3 digits of the number and nExchanges will tell you where that number is located. This version is for Maryland only, no other areas are available at this time, but soon... Shareware.