Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 338

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-338 A Lake Hughes CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-338 0 Lake Hughes CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-338 1 Lake Hughes CA LSANCAJW6MD  073H TELNYX LLC 730   2017-08-14   
661-338 2 Lake Hughes CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-338 3 Lake Hughes CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2019-04-22   
661-338 4 Lake Hughes CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-07-30   
661-338 5 Lake Hughes CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2016-04-06   
661-338 6 Lake Hughes CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2016-04-06   
661-338 7 Lake Hughes CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2008-09-19   
661-338 8 Lake Hughes CA LSANCARCY1X  321J HD CARRIER LLC 730   2016-06-11   
661-338 9 Lake Hughes CA   145J TERRA NOVA TELECOM INC. 730   2022-06-01   

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

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