[188742] in North American Network Operators' Group

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

daemon@ATHENA.MIT.EDU (Larry Sheldon)
Wed Apr 13 19:28:22 2016

X-Original-To: nanog@nanog.org
To: nanog@nanog.org
From: Larry Sheldon <larrysheldon@cox.net>
Date: Wed, 13 Apr 2016 18:28:07 -0500
In-Reply-To: <5B6E932D-7A22-45A4-B04C-787718150FF5@delong.com>
Errors-To: nanog-bounces@nanog.org

On 4/13/2016 15:12, Owen DeLong wrote:

> 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.

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.

I am in frequent contact by a person that has a 917 NNX-XXXX-numbered 
telephone who spends a lot of time with a person that has a 408 
NNX-XXXX-numbered telephone, and they both live in Metropolitan Boston

The number I offer as my "home" telephone number "belongs" to a CO in a 
town 11 miles south of here and is not switched by the company that 
"owns" it.

Knowing a telephone number or an IP address means that on a good day, 
you know how to make a connection with an instrument associated with it. 
  Which may well be in the possession of Mrs. Calabash.
-- 
sed quis custodiet ipsos custodes? (Juvenal)

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