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: 325 [Rate centres in NPA 325] [Dial plan for NPA 325]

NXX: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
325-577 A Eldorado TX SANGTXXAXMX  965H FRACTEL, LLC 961      
325-577 0 Eldorado TX SANGTXXAXJX  073H TELNYX LLC 961   2021-03-14   
325-577 1 Eldorado TX SANHTX320MD  939H COMMIO, LLC 961   2023-08-19   
325-577 2 Eldorado TX SANHTX320MD  939H COMMIO, LLC 961   2023-08-19   
325-577 3 Eldorado TX SANHTX320MD  939H COMMIO, LLC 961   2023-08-19   
325-577 4 Eldorado TX FRDNTXXA0MD  413F HILL COUNTRY TELECOMMUNICATIONS, LLC - TX 961   2023-12-09   
325-577 5 Eldorado TX SANGTXXAXLX  624H ONVOY SPECTRUM, LLC 961   2024-01-05   
325-577 7 Eldorado TX SANGTXXAXMX  965H FRACTEL, LLC 961   2020-09-06   
325-577 8 Eldorado TX SANHTX320MD  939H COMMIO, LLC 961   2023-08-19   
325-577 9 Eldorado TX SANHTX320MD  939H COMMIO, LLC 961   2023-08-19   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.