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: 381

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-381 A Northwood IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-381 0 Northwood IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-381 1 Northwood IA   221F ONVOY, LLC - IA 632   2020-11-23   
641-381 2 Northwood IA   221F ONVOY, LLC - IA 632   2018-02-26   
641-381 3 Northwood IA   6529 T-MOBILE USA, INC. 632   2018-04-02   
641-381 4 Northwood IA   6529 T-MOBILE USA, INC. 632   2018-04-02   
641-381 5 Northwood IA   221F ONVOY, LLC - IA 632   2019-09-20   
641-381 6 Northwood IA   221F ONVOY, LLC - IA 632   2019-09-20   
641-381 7 Northwood IA   508J CENTURYLINK COMMUNICATIONS, LLC 632   2017-03-25   
641-381 8 Northwood IA   5562 METROPCS, INC. 632   2018-07-12   
641-381 9 Northwood IA   221F ONVOY, LLC - IA 632   2020-08-10   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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