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.

NPA: 580 [Rate centres in NPA 580] [Dial plan for NPA 580]

NXX: 563

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-563 A Blair OK BLAROKMARS1  9533 SOUTHWESTERN BELL 536      
580-563 0 Blair OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536      
580-563 1 Blair OK BLAROKMARS1  9533 SOUTHWESTERN BELL 536      
580-563 2 Blair OK BLAROKMARS1  9533 SOUTHWESTERN BELL 536      
580-563 4 Blair OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536      
580-563 5 Blair OK OKCYOKCEXXY  516C AT&T CORP. 536      
580-563 6 Blair OK OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536      
580-563 7 Blair OK OKCYOKMTG01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-563 8 Blair OK OKCYOKCEDS7  384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536      
580-563 9 Blair OK BLAROKMARS1  9533 SOUTHWESTERN BELL 536      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.