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.

Middletown, OH

<< 1 2 3 4

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
513-974 4 MDTWOH42DS1  9321 OHIO BELL TEL CO 328   2016-04-10   
513-974 5 MDTWOH42DS1  9321 OHIO BELL TEL CO 328   2016-04-10   
513-974 6 MDTWOH42DS1  9321 OHIO BELL TEL CO 328   2016-04-10   
513-974 7 MDTWOH42DS1  9321 OHIO BELL TEL CO 328   2016-04-10   
513-974 8 MDTWOH42DS1  9321 OHIO BELL TEL CO 328   2016-04-10   
513-974 9 MDTWOH42DS1  9321 OHIO BELL TEL CO 328   2016-04-10   
513-997 A DYTNOH22X8Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 328      
513-997 0 HRTPOHBL0MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 328   2015-10-17   
513-997 1   793K TWC IP ENABLED SERVICES, LLC 328   2015-11-16   
513-997 2   793K TWC IP ENABLED SERVICES, LLC 328   2016-03-31   
513-997 3 DYTNOH22X0Z  6529 T-MOBILE USA, INC. 328   2018-11-12   
513-997 4 DYTNOH22X0Z  6529 T-MOBILE USA, INC. 328   2018-11-12   
513-997 5 DYTNOHKT2MD  073H TELNYX LLC 328   2017-03-15   
513-997 6 DYTNOHKTDS3  284F PEERLESS NETWORK OF OHIO, LLC - OH 328   2017-07-15   
513-997 7 HRTPOHBL0MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 328   2015-08-12   
513-997 8 HRTPOHBL0MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 328   2015-08-12   
513-997 9 DYTNOH22X8Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 328   2015-07-18   

<< 1 2 3 4

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.