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: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

NXX: 668

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-668 A Bussey IA DESMIADTX6Y  516J TON80 COMMUNICATIONS, LLC 632      
641-668 4 Bussey IA KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-03-09   
641-668 6 Bussey IA   145J TERRA NOVA TELECOM INC. 632   2025-05-17   
641-668 8 Bussey IA DESMIADTX6Y  516J TON80 COMMUNICATIONS, LLC 632   2022-05-14   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.