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: 545

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-545 A Smithers Lake TX SMLKTXSMDS0  9533 SOUTHWESTERN BELL 560      
281-545 0 Smithers Lake TX HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560      
281-545 1 Smithers Lake TX SMLKTXSMDS0  9533 SOUTHWESTERN BELL 560      
281-545 2 Smithers Lake TX SMLKTXSMDS0  9533 SOUTHWESTERN BELL 560      
281-545 3 Smithers Lake TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
281-545 4 Smithers Lake TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
281-545 5 Smithers Lake TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-545 6 Smithers Lake TX SMLKTXSMDS0  9533 SOUTHWESTERN BELL 560      
281-545 7 Smithers Lake TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
281-545 8 Smithers Lake TX SMLKTXSMDS0  9533 SOUTHWESTERN BELL 560      
281-545 9 Smithers Lake TX SMLKTXSMDS0  9533 SOUTHWESTERN BELL 560      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.