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: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-440 A Clear Lake IA DESMIAITX1X  751F MCC TELEPHONY OF IOWA, LLC - IA 632      
641-440 0 Clear Lake IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2023-09-17   
641-440 1 Clear Lake IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2025-02-16   
641-440 4 Clear Lake IA BOONIA01DS1  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-14   
641-440 5 Clear Lake IA DESMIAITX6X  5562 METROPCS, INC. 632   2018-07-02   
641-440 7 Clear Lake IA DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2022-02-18   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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