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.
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State Center, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
641-303 A DESMIAITX1X  751F MCC TELEPHONY OF IOWA, LLC - IA 632      
641-303 1 DESMIAITX1X  751F MCC TELEPHONY OF IOWA, LLC - IA 632   2023-12-23   
641-303 3   145J TERRA NOVA TELECOM INC. 632   2025-05-27   
641-483 A GLMNIAXODS1  1187 PARTNER COMMUNICATIONS COOPERATIVE 632      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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