Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 505 [Rate centres in NPA 505] [Dial plan for NPA 505]

NXX: 436

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
505-436 A Farmington NM ALBQNMXMAMD  6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664      
505-436 0 Farmington NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2011-07-08   
505-436 1 Farmington NM   123F BANDWIDTH.COM CLEC, LLC - NM 664   2011-07-12   
505-436 2 Farmington NM   318J COMCAST IP PHONE, LLC 664   2011-07-21   
505-436 3 Farmington NM   5470 LEVEL 3 COMMUNICATIONS, LLC - NM 664   2011-08-26   
505-436 4 Farmington NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2012-07-24   
505-436 5 Farmington NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2012-09-06   
505-436 6 Farmington NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2012-10-05   
505-436 7 Farmington NM   206F ONVOY, LLC - NM 664   2011-09-27   
505-436 8 Farmington NM   6010 NEW CINGULAR WIRELESS PCS, LLC 664   2011-07-18   
505-436 9 Farmington NM   6010 NEW CINGULAR WIRELESS PCS, LLC 664   2011-07-18   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.