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: 320

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-320 A Portales NM ALBQNM10DS5  377H PEERLESS NETWORK OF NEW MEXICO, LLC - NM 664      
575-320 0 Portales NM   515J IP HORIZON LLC 664   2022-05-26   
575-320 1 Portales NM   206F ONVOY, LLC - NM 664   2021-03-04   
575-320 2 Portales NM   206F ONVOY, LLC - NM 664   2021-03-04   
575-320 3 Portales NM   624H ONVOY SPECTRUM, LLC 664   2025-01-22   
575-320 4 Portales NM   5470 LEVEL 3 COMMUNICATIONS, LLC - NM 664   2021-09-26   
575-320 7 Portales NM   377H PEERLESS NETWORK OF NEW MEXICO, LLC - NM 664   2024-03-24   
575-320 8 Portales NM   206F ONVOY, LLC - NM 664   2024-03-08   
575-320 9 Portales NM   377H PEERLESS NETWORK OF NEW MEXICO, LLC - NM 664   2019-10-26   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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