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: HLBOOH3939A

Remotes:

Switch Switch name Switch type
ABRDOH79RS1  ABERDEEN  RSC 
BLFSOH76RS1  BELFAST  RLC 
DANHOH28RS1  DANVILLE (HIGHLAND)  RSC 
MRSHOH46RS1  MARSHALL  RSC 
RNBOOH36RS1  RAINSBORO  RSC 
RPLYOH39RS1  RIPLEY  RSC 
SGTROH92RS1  SUGAR TREE RIDGE  RLC 
WNCHOH69RS1  WINCHESTER (ADAMS)  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
937-393 A Hillsboro OH 9321 OHIO BELL TEL CO 328      
937-840 A Hillsboro OH 9321 OHIO BELL TEL CO 328      
937-840 0 Hillsboro OH 9321 OHIO BELL TEL CO 328      
937-840 1 Hillsboro OH 9321 OHIO BELL TEL CO 328      
937-840 2 Hillsboro OH 9321 OHIO BELL TEL CO 328      
937-840 5 Hillsboro OH 9321 OHIO BELL TEL CO 328      
937-840 6 Hillsboro OH 9321 OHIO BELL TEL CO 328      
937-840 9 Hillsboro OH 9321 OHIO BELL TEL CO 328      

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

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