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: 344

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-344 A Cannon AFB NM   6529 T-MOBILE USA, INC. 664   2025-09-05   
575-344 4 Cannon AFB NM   145J TERRA NOVA TELECOM INC. 664   2025-09-08   
575-344 6 Cannon AFB NM   450C TELEPORT COMMUNICATIONS AMERICA NM-LLC 664   2026-01-12   
575-344 8 Cannon AFB NM   6529 T-MOBILE USA, INC. 664   2025-09-05   
575-344 9 Cannon AFB NM   6529 T-MOBILE USA, INC. 664   2025-09-05   

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

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