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From: Paul S Person <psperson@old.netcom.invalid>
Newsgroups: rec.arts.sf.written
Subject: Re: ongoing infrastructure changes with AI in the USA
Date: Wed, 20 Nov 2024 08:51:15 -0800
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On Tue, 19 Nov 2024 17:01:31 -0600, "Jay E. Morris"
<morrisj@epsilon3.comcon> wrote:

>On 11/19/2024 12:44 PM, Garrett Wollman wrote:
>> In article <vhih8r$1uic7$1@dont-email.me>,
>> Cryptoengineer  <petertrei@gmail.com> wrote:
>>> On 11/19/2024 11:25 AM, Paul S Person wrote:
>>>> I don't suppose there is an easy way to relate a given cell phone
>>>> number to the carrier and so to the @ address?
>>>
>>> No, there isn't. US phone numbers have been movable between carriers
>>> for decades. I did it myself.
>>=20
>> There is a national database -- obviously, because the incoming calls
>> have to get routed to the right carrier.  I seem to have misplaced the
>> name of this database; it's operated under an FCC contract by an
>> organization called the Number Portability Administration Center.
>> Every phone call and SMS message requires a lookup in this database.
>>=20
>> Originally, calls would be routed on the basis of the local exchange
>> carrier to which the NPA-NXX was assigned, and then numbers which had
>> been "ported out" would be kicked back to the originating carrier with
>> a "not our number" message to force a database lookup.  These days,
>> it makes sense to just do the database dip unconditionally.  (There's
>> caching in the carrier networks to minimize their database access
>> charges.)
>>=20
>> Whether there's any way for normal people to get access to this
>> information I don't know.
>>=20
>> -GAWollman
>>=20
>
>As I said in the other message, https://www.whitepages.com/ and the=20
>reverse number lookup did give my carrier. I have not moved carriers in=20
>over 20 years though so someone who has would have to verify that it=20
>still gives the right carrier.

I have that link and the Number Portability Administration Center
recorded in a file aptly named "HardStuff.odt", but when or if I try
to use it remains to be seen. So TIA to both of you for the info.
--=20
"Here lies the Tuscan poet Aretino,
Who evil spoke of everyone but God,
Giving as his excuse, 'I never knew him.'"