Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 505 [Rate centres in NPA 505] [Dial plan for NPA 505]

NXX: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
505-278 A Farmington NM ALBQNMMAXLX  5470 LEVEL 3 COMMUNICATIONS, LLC - NM 664      
505-278 0 Farmington NM   123F BANDWIDTH.COM CLEC, LLC - NM 664   2014-06-16   
505-278 1 Farmington NM   6010 NEW CINGULAR WIRELESS PCS, LLC 664   2025-09-26   
505-278 2 Farmington NM   5470 LEVEL 3 COMMUNICATIONS, LLC - NM 664   2013-07-19   
505-278 3 Farmington NM   5562 METROPCS, INC. 664   2016-12-12   
505-278 4 Farmington NM   5562 METROPCS, INC. 664   2015-07-04   
505-278 5 Farmington NM   206F ONVOY, LLC - NM 664   2016-03-11   
505-278 6 Farmington NM   206F ONVOY, LLC - NM 664   2016-03-11   
505-278 7 Farmington NM   206F ONVOY, LLC - NM 664   2013-09-15   
505-278 8 Farmington NM   318J COMCAST IP PHONE, LLC 664   2013-10-18   
505-278 9 Farmington NM   123F BANDWIDTH.COM CLEC, LLC - NM 664   2015-02-23   

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

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