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: 575 [Rate centres in NPA 575] [Dial plan for NPA 575]

NXX: 341

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-341 A Carlsbad NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2025-04-25   
575-341 0 Carlsbad NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2025-04-25   
575-341 1 Carlsbad NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2025-04-25   
575-341 2 Carlsbad NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2025-04-25   
575-341 8 Carlsbad NM   641H TDS BROADBAND SERVICE LLC 664   2025-11-02   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.