Local Calling Guide

Area code/prefix search

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Grimes, CA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
530-437 A GRMSCAXFRS0  3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 726      
530-437 0 GRMSCAXFRS0  3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 726      
530-437 2 GRMSCAXFRS0  3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 726      
530-437 3 SCRMCA0121Z  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726   2015-07-17   
530-437 6   145J TERRA NOVA TELECOM INC. 726   2025-05-15   
530-437 7 WSCRCAHW3MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 726   2015-03-19   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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