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: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 899

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-899 A Lombard IL CHCGILWURMD  965H FRACTEL, LLC 358      
331-899 0 Lombard IL CHCGIL24MMD  515J IP HORIZON LLC 358      
331-899 1 Lombard IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-899 2 Lombard IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-899 3 Lombard IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-899 4 Lombard IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-899 5 Lombard IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-899 6 Lombard IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-899 7 Lombard IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-899 8 Lombard IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-899 9 Lombard IL CHCGILWURMD  965H FRACTEL, LLC 358      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.