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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
336-421 A Anderson NC ARSNNCMARS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 424      
336-421 0 Anderson NC ARSNNCMARS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 424      
336-421 1 Anderson NC ARSNNCMARS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 424      
336-421 2 Anderson NC GNBONCEU27Z  998E BANDWIDTH.COM CLEC, LLC - NC 424   2012-02-03   
336-421 3 Anderson NC ARSNNCMARS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 424      
336-421 4 Anderson NC GNBONCCKX9X  3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2005-03-06   
336-421 5 Anderson NC ARSNNCMARS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 424      
336-421 6 Anderson NC   145J TERRA NOVA TELECOM INC. 424   2020-11-06   
336-421 7 Anderson NC   145J TERRA NOVA TELECOM INC. 424   2021-09-25   
336-421 8 Anderson NC   145J TERRA NOVA TELECOM INC. 424   2022-04-20   
336-421 9 Anderson NC ARSNNCMARS0  9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 424      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.