> On Apr 13, 2016, at 12:45 , John R. Levine <jo...@iecc.com> wrote: > >>> NANP geographical numbers can be located to a switch (give >>> or take number portability within a LATA), but non-geographic numbers >>> can really go anywhere. On the third hand, it's still true that the >>> large majority of them are in the U.S. >> >> Would you agree that 408-921 is a geographic number? > > No. It's a prefix, assigned to the at&t switch in west San Jose. > >> I guarantee you that there are phones within that prefix within >> US/Calif/LATA-1 and also some well outside of that, probably not even in the >> same country. > > Who said anything about phones? Could you describe what "geographic numbers > can be located to a switch" means to you?
I guarantee you that many, if not most at this point, of those numbers are no longer actually handled by that switch most of the time. I suspect that there are more SS7 exceptions than default within that particular prefix which is why I chose it. Owen
