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.

Headrick, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-738 A HDRCOKMARL0  9533 SOUTHWESTERN BELL 536      
580-738 0 OKCYOKCEDS7  384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536      
580-738 1 HDRCOKMARL0  9533 SOUTHWESTERN BELL 536      
580-738 2 OKCYOKCEXBZ  073H TELNYX LLC 536      
580-738 3 OKCYOKCEXJY  409F ONVOY, LLC - OK 536      
580-738 4 OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536      
580-738 5   145J TERRA NOVA TELECOM INC. 536      
580-738 6 OKCYOKCEXXY  516C AT&T CORP. 536      
580-738 7 OKCYOKCEXJY  409F ONVOY, LLC - OK 536      
580-738 8 OKCYOKCEXJY  409F ONVOY, LLC - OK 536      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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