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.
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Switch: WLPTTNMARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
931-583 A Williamsport TN 9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 470      
931-583 0 Williamsport TN 9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 470      
931-583 2 Williamsport TN 9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 470      
931-583 9 Williamsport TN 9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 470      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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