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: 784

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-784 A Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      
641-784 1 Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      
641-784 2 Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      
641-784 3 Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      
641-784 4 Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      
641-784 5 Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      
641-784 6 Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      
641-784 7 Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      
641-784 8 Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      
641-784 9 Lamoni IA LEONIAXODS0  1888 GRAND RIVER MUTUAL TEL CO 632      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.