[VoiceOps] Rate Center to LATA map

Alex Balashov abalashov at evaristesys.com
Tue Sep 28 16:54:51 EDT 2010

On 09/28/2010 04:11 PM, Eric Hiller wrote:

> I still am unsure of what the third file is, the critical one that
> converts from rate center to lata?

You guys do have a point.  I shouldn't have been so sanctimonious.

The old NANPA sheet I have had a LATA column in it;  at some point, 
they must have stopped providing it.

You can't resolve a rate center to a LATA per se, but you can resolve 
an NPA to a LATA pretty easily.  However, that won't help you avoid 
edge cases like LATAs that flow across state borders into NPAs that 
are otherwise 99% in some other LATA -- those do happen.  For that, 
you'd need the LERG and/or pooling data.

Alex Balashov - Principal
Evariste Systems LLC
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12th Floor, Suite 1200
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