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: 651

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-651 A Spring EMS TX SPRNTXSODS0  9533 SOUTHWESTERN BELL 560      
281-651 0 Spring EMS TX SPRNTXSODS0  9533 SOUTHWESTERN BELL 560      
281-651 1 Spring EMS TX SPRNTXSODS0  9533 SOUTHWESTERN BELL 560      
281-651 2 Spring EMS TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2005-09-09   
281-651 3 Spring EMS TX SPRNTXSODS0  9533 SOUTHWESTERN BELL 560      
281-651 4 Spring EMS TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2007-05-29   
281-651 5 Spring EMS TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2006-09-11   
281-651 6 Spring EMS TX SPRNTXSODS0  9533 SOUTHWESTERN BELL 560      
281-651 7 Spring EMS TX SPRNTXSODS0  9533 SOUTHWESTERN BELL 560      
281-651 8 Spring EMS TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2018-11-04   
281-651 9 Spring EMS TX SPRNTXSODS0  9533 SOUTHWESTERN BELL 560      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.