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: 254 [Rate centres in NPA 254] [Dial plan for NPA 254]

NXX: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
254-521 A Killeen TX KLLNTXXA0MD  903C ONVOY, LLC - TX 556      
254-521 0 Killeen TX KLLNTXBI9MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 556      
254-521 1 Killeen TX KLLNTXBI9MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 556      
254-521 2 Killeen TX KLLNTXXA0MD  903C ONVOY, LLC - TX 556      
254-521 3 Killeen TX KLLNTXXA0MD  903C ONVOY, LLC - TX 556      
254-521 4 Killeen TX KLLNTXXA0MD  903C ONVOY, LLC - TX 556      
254-521 5 Killeen TX KLLNTXXA0MD  903C ONVOY, LLC - TX 556      
254-521 6 Killeen TX KLLNTXXA0MD  903C ONVOY, LLC - TX 556      
254-521 7 Killeen TX KLLNTXXA0MD  903C ONVOY, LLC - TX 556      
254-521 8 Killeen TX KLLNTXXA0MD  903C ONVOY, LLC - TX 556      
254-521 9 Killeen TX KLLNTXXA0MD  903C ONVOY, LLC - TX 556      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.