Seth Breidbart <sethb@fid.morgan.com> (04/14/91)
> [Moderator's Note: The rules about *area codes* are going to change in > a few years when area codes can have other than zero or one as their > second digit. The rule about the third digit of an area code having to > be two through nine has already changed. Now we see a limited number > of zeros as the third digit in area codes, but you still never see a > third digit of one. 201 has been New Jersey for a long time. Likewise, 301 is Maryland. Maybe you mean prefixes? But New York has exchanges with 1 as the third digit (just glancing through the Manhattan phone book). > It was *prefixes* in the past which never had zero > or one in the second digit. And several years ago, a prefix never had > zero as the third digit; In 1975 or thereabouts, a friend of mine had the phone number (business) 617-xx0-0000. Seth sethb@fid.morgan.com [Moderator's Note: Well silly me! What I meant to say, but somehow did not type in was 'area codes do not have *second and third* digits of one, i.e. 311, 511, 711, etc.' The rule was: first digit 2 <=> 9; second digit 0 or 1, but never two zeros or two ones; and third digit always 1 <=> 9 with never a zero in the third position, and a one in the third position only provided there was not a one in the second position. Thanks also to John Higdon and others who wrote on this. PAT]