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: 572 [Rate centres in NPA 572] [Dial plan for NPA 572]

NXX: 999

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
572-999 A Guthrie OK OKCYOKCEXLZ  965H FRACTEL, LLC 536      
572-999 0 Guthrie OK OKCYOKCEX9Y  119F BANDWIDTH.COM CLEC, LLC - OK 536   2021-08-08   
572-999 1 Guthrie OK OKCYOKCEDS7  384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2021-07-24   
572-999 2 Guthrie OK OKCYOKCEXMZ  145J TERRA NOVA TELECOM INC. 536   2024-08-20   
572-999 3 Guthrie OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2021-05-28   
572-999 4 Guthrie OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2021-05-28   
572-999 5 Guthrie OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2021-05-28   
572-999 6 Guthrie OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2021-05-28   
572-999 7 Guthrie OK OKCYOKCEXLZ  965H FRACTEL, LLC 536   2021-05-24   
572-999 8 Guthrie OK OKCYOKCEXLZ  965H FRACTEL, LLC 536   2021-05-24   
572-999 9 Guthrie OK OKCYOKCEXLZ  965H FRACTEL, LLC 536   2021-05-24   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.