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: 663

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-663 A San Ysidro NM ALBQNM10X3X  516J TON80 COMMUNICATIONS, LLC 664      
575-663 0 San Ysidro NM   6010 NEW CINGULAR WIRELESS PCS, LLC 664   2025-04-27   
575-663 3 San Ysidro NM   145J TERRA NOVA TELECOM INC. 664   2025-07-06   
575-663 7 San Ysidro NM ALBQNM10X3X  516J TON80 COMMUNICATIONS, LLC 664   2022-03-16   
575-663 8 San Ysidro NM ALBQNMMAXQX  6010 NEW CINGULAR WIRELESS PCS, LLC 664   2024-02-01   
575-663 9 San Ysidro NM ALBQNMMAXQX  6010 NEW CINGULAR WIRELESS PCS, LLC 664   2022-04-07   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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