Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

NXX: 305

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-305 A Melrose IA KNVLIAXC1MD  751F MCC TELEPHONY OF IOWA, LLC - IA 632   2025-06-14   
641-305 1 Melrose IA KNVLIAXC1MD  751F MCC TELEPHONY OF IOWA, LLC - IA 632   2025-06-14   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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