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: 336 [Rate centres in NPA 336] [Dial plan for NPA 336]

NXX: 490

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
336-490 A Denton NC DNTNNCXAPS0  0476 WINDSTREAM NORTH CAROLINA, INC. 424      
336-490 0 Denton NC   793K TWC IP ENABLED SERVICES, LLC 424      
336-490 1 Denton NC   624H ONVOY SPECTRUM, LLC 424      
336-490 2 Denton NC LXTNNCXAAMD  638E ONVOY, LLC - NC 424      
336-490 3 Denton NC DNTNNCXAPS0  0476 WINDSTREAM NORTH CAROLINA, INC. 424      
336-490 4 Denton NC LXTNNCXAAMD  638E ONVOY, LLC - NC 424      
336-490 5 Denton NC LXTNNCXAAMD  638E ONVOY, LLC - NC 424      
336-490 6 Denton NC GNBONCEU31Z  8389 TELEPORT COMMUNICATIONS AMERICA, LLC - NC 424      
336-490 7 Denton NC GNBONCEU53Z  508J CENTURYLINK COMMUNICATIONS, LLC 424      
336-490 8 Denton NC ASBONCXAYMD  757D RANDOLPH TELEPHONE TELECOMMUNICATIONS, INC. - NC 424      
336-490 9 Denton NC LXTNNCXAAMD  638E ONVOY, LLC - NC 424      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.