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: 281 [Rate centres in NPA 281] [Dial plan for NPA 281]

NXX: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-640 A Satsuma TX HSTQTX02DMD  8489 GLOBAL CROSSING LOCAL SERVICES, INC. - TX 560      
281-640 0 Satsuma TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-09-03   
281-640 1 Satsuma TX HSTQTX02DMD  8489 GLOBAL CROSSING LOCAL SERVICES, INC. - TX 560      
281-640 2 Satsuma TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
281-640 3 Satsuma TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
281-640 4 Satsuma TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-10-21   
281-640 5 Satsuma TX HSTNTXYAPMD  495J STRATUS NETWORKS 560   2021-06-20   
281-640 6 Satsuma TX HSTDTXBG8MD  5562 METROPCS, INC. 560   2020-11-19   
281-640 7 Satsuma TX HSTNTXGIDS0  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2009-10-05   
281-640 8 Satsuma TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2003-10-01   
281-640 9 Satsuma TX   624H ONVOY SPECTRUM, LLC 560   2024-04-30   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.