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: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-440 A Red River NM ALBQNMMAXKY  508J CENTURYLINK COMMUNICATIONS, LLC 664      
575-440 0 Red River NM   377H PEERLESS NETWORK OF NEW MEXICO, LLC - NM 664   2015-10-25   
575-440 1 Red River NM   206F ONVOY, LLC - NM 664   2016-04-14   
575-440 2 Red River NM   206F ONVOY, LLC - NM 664   2016-04-14   
575-440 3 Red River NM   377H PEERLESS NETWORK OF NEW MEXICO, LLC - NM 664   2020-03-20   
575-440 5 Red River NM   624H ONVOY SPECTRUM, LLC 664   2025-01-22   
575-440 6 Red River NM   206F ONVOY, LLC - NM 664   2021-03-05   
575-440 7 Red River NM   508J CENTURYLINK COMMUNICATIONS, LLC 664   2015-08-03   
575-440 8 Red River NM   206F ONVOY, LLC - NM 664   2021-03-05   
575-440 9 Red River NM   073H TELNYX LLC 664   2018-09-03   

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

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