[asterisk-users] Country numbering plan resources

[Alex Balashov]

If you want an idea of what the setup looks like in NANPA land, enjoy 
this convenient spreadsheet:

http://www.nanpa.com/nanp1/allutlzd.zip

Notice that there is no discernable pattern to the number space 
allocated to a particular flavour of carrier.

And do beware that these are 10,000 code blocks only;  in pooled areas 
(most metropolitan areas, and an increasingly large number of areas) 
these get split up into 1,000-code blocks and the information from that 
comes from National Pooling/Neustar (www.nationalpooling.com). 
Consequently, routing or analysing anything by 10,000 blocks is becoming 
an increasingly useless practise.

Oh, and don't forget the byzantine properties of portability here.

Alex Balashov wrote:

> One of the problems you'll run into is that in larger countries like the 
> US, and/or countries with greater amounts of telecom interconnection, 
> competition and deregulation, this information cannot be reduced simply 
> to a convenient algorithm.
> 
> The North American Numbering Plan (www.nanpa.com) does provide some 
> basic standards for valid numbers, but aside from that, there exists no 
> special numerological distinction between incumbent and competitive, 
> fixed-line and mobile, or VoIP, and extensive number portability throws 
> even more complexity into the mix.
> 
> I'm not saying it can't be done - just be aware that the undertaking 
> you're proposing is very complicated, and the information would come 
> from innumerable data sources (a great deal of them commercial and 
> expensive) and a bewilderingly overlapping array of standards bodies.
> 
> For instance, something like this:
> 
>> NZ Cellular:
>> area code 21 and 29 followed by 6, 7 or 8 digits - Vodafone GSM
>> area code 27 followed by 6 or 7 digits - NZ Telecom CDMA
>> note that there is number portability so the above is a guide.
> 
> ... sounds like a laughably, impossibly simplistic formula to a North 
> American reader.  And I can't imagine the situation in many other 
> countries is much simpler.
> 
> 


-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
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