Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Thompson, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
641-306 A   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2026-06-19   
641-306 7   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2026-06-19   
641-514 A DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632      
641-584 A LKMLIAXODS1  1337 WINNEBAGO COOP. TEL. ASSN. - IA 632      

Last updated: Sun, 17 May 2026 03:26:51 UTC

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