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: 228

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
572-228 A Oklahoma City OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2024-03-30   
572-228 0 Oklahoma City OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2024-03-30   
572-228 1 Oklahoma City OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2024-03-30   
572-228 2 Oklahoma City OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2024-03-30   
572-228 3 Oklahoma City OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2024-03-30   
572-228 4 Oklahoma City OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2024-03-30   
572-228 5 Oklahoma City OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2024-03-30   
572-228 6 Oklahoma City OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2024-03-30   
572-228 7 Oklahoma City OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2024-03-30   
572-228 8 Oklahoma City OK OKCYOKCE07Z  490J DISH WIRELESS, LLC 536   2024-04-01   
572-228 9 Oklahoma City OK OKCYOKCE07Z  490J DISH WIRELESS, LLC 536   2024-07-01   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.