Carl Moore (VLD/VMB) <cmoore@brl.mil> (05/08/91)
(No, NNX area codes have not come yet; 310,410,510, not yet in use at this writing, still fit the N0X/N1X form.) Could someone review the plan for NNX area codes? Specifically, is Mexico still to get the pseudo-area-codes of 52x where x is not necessarily 0? The first slew of NNX area codes is to be of form NN0, with the past-or-current idea that some area codes will thus be able to retain 1+7D (intra-NPA long distance) by not using PREFIXES of NN0 form. Bellcore has or had something to say about the NN0/NNX format, right?
Carl Wright <wright@ais.org> (05/20/91)
I have quietly read references to pseudo-NNX codes for Mexico as 52n, but I can't take it any longer. The only way I can make sense of this reference is if we assume that the pseudo area code for this pseudo NNX is "011". Sorry, but aren't these international country codes, just like Belgium and Australia use? Carl Wright | Lynn-Arthur Associates, Inc. Internet: wright@ais.org | 2350 Green Rd., #160 Voice: 1 313 995 5590 EST | Ann Arbor, MI 48105
Hans Mulder <hansm@cs.kun.nl> (05/22/91)
Carl Wright asked: > I have quietly read references to pseudo-NNX codes for Mexico as 52n, > but I can't take it any longer. > The only way I can make sense of this reference is if we assume that > the pseudo area code for this pseudo NNX is "011". > Sorry, but aren't these international country codes, just like Belgium > and Australia use? Maybe it's time to spell it out again, rather than quietly referencing it all the time: At some point in the foreseeable future, the North America Numbering Plan will run out of area codes. Bellcore has announced that they will then start assigning NNX area codes; they call those Interchangeable Area Codes. "Interchangeable" in the sense that such area codes look like exchange codes. This will probably happen in 1995. Rumour has it that they will then assign pseudo area codes 521 through 529 to areas +52-1 through +52-9 in Mexico. They are already so used internally; the question is whether the general public will be allowed to dial those pseudo area codes. When, and if, that happens, you will be able to reach Mexico City by dialing 1-525 rather 011-52-5, like you could use 1-905 until recently. This will shorten dialling by two digits and will fool countless North Americans into thinking that Mexico is somehow part of the North America Numbering Plan after all. Just pray that no long distance carrier will be pedantic enough to intercept 011-52-N-XXX-XXXX with a recorded message "The number you have dialed, 011 52 N XXX XXXX, can be reached by dialling 1-52N-XXX-XXXX", and fail to connect you. Have a nice day, Hans Mulder hansm@cs.kun.nl