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.

Switch: TOROOH53RS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
740-537 A Toronto OH 9321 OHIO BELL TEL CO 324      
740-537 1 Toronto OH 9321 OHIO BELL TEL CO 324      
740-537 2 Toronto OH 9321 OHIO BELL TEL CO 324      
740-537 3 Toronto OH 9321 OHIO BELL TEL CO 324      
740-537 4 Toronto OH 9321 OHIO BELL TEL CO 324      
740-537 5 Toronto OH 9321 OHIO BELL TEL CO 324      
740-537 6 Toronto OH 9321 OHIO BELL TEL CO 324      
740-537 9 Toronto OH 9321 OHIO BELL TEL CO 324      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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