cmoore@brl.mil (VLD/VMB) (11/02/90)
I went to the library at Elkton, Maryland, and looked through call guides for other parts of Maryland. When I was done, I listed only 17 unused NNX prefixes in Maryland (area 301 for entire state), and these include 950 (carrier access) and 958 (phone-co. usage?). As a result, I saw N0X/N1X prefixes appearing in Maryland further away from DC than I have ever seen before: 606 in Frederick, 416 in Myersville (near Frederick), and 208 in Berlin on the lower eastern shore. These have no local service outside of Maryland. But I see that the next exchange north of Berlin, which is at the junction of U.S. 113 and U.S. 50, is 301-352 Bishopville, which is local to Selbyville, Delaware. There would be a problem (right?) in putting N0X/N1X prefix in an exchange which is just a 7-digit local call away from an out-of-area exchange (exception in Maryland for the DC area suburbs, which now require NPA+7D for out-of-area local call anyway).