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: 401

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-401 A Swaledale IA DESMIADTFMD  221F ONVOY, LLC - IA 632      
641-401 1 Swaledale IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2020-08-10   
641-401 2 Swaledale IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2020-11-20   
641-401 3 Swaledale IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2020-11-20   
641-401 4 Swaledale IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2018-12-23   
641-401 6 Swaledale IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2020-02-22   
641-401 7 Swaledale IA DESMIADTXJX  508J CENTURYLINK COMMUNICATIONS, LLC 632   2018-12-25   
641-401 8 Swaledale IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2019-10-28   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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