Re: phone fun, was GeoIP database issues and the real world consequences

["John Levine" <johnl () iecc com>]

> I question whether (on a global scale) the odds are above 50-50 that a 
> number (other than a test line) is served by the switch NANPA associates 
> with the number.

The people on nanog are not typical.  I looked around for statistics
and didn't find much, but it looks like only a few percent of numbers
are ported each month, and it's often the same numbers being ported
repeatedly.

I'd also expect to find a lot more porting in the highly competitive
wireless industry than in the monopolistic wireline biz.

R's,
John