cmoore@BRL.ARPA (Carl Moore, VLD/VMB) (01/01/86)
When a new area code is created, how long does it take before any prefix is duplicated between the new area code and what's left of the one that was split? For example, if you look up addresses with phone #'s in New York City, you can go on quite a while with the list of 212-area- before-creation-of-718 prefixes.