Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 575 [Rate centres in NPA 575] [Dial plan for NPA 575]

NXX: 302

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-302 A Carlsbad NM ALBRNMFE5MD  6529 T-MOBILE USA, INC. 664      
575-302 0 Carlsbad NM   6529 T-MOBILE USA, INC. 664   2005-05-29   
575-302 1 Carlsbad NM   6529 T-MOBILE USA, INC. 664      
575-302 2 Carlsbad NM   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 664   2006-09-16   
575-302 3 Carlsbad NM   6529 T-MOBILE USA, INC. 664      
575-302 4 Carlsbad NM   6529 T-MOBILE USA, INC. 664   2006-04-13   
575-302 5 Carlsbad NM   6529 T-MOBILE USA, INC. 664   2004-12-14   
575-302 6 Carlsbad NM   6529 T-MOBILE USA, INC. 664      
575-302 7 Carlsbad NM   6529 T-MOBILE USA, INC. 664   2004-03-26   
575-302 8 Carlsbad NM   6529 T-MOBILE USA, INC. 664   2003-11-04   
575-302 9 Carlsbad NM   6529 T-MOBILE USA, INC. 664      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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