Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: SHTNCAXFDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
530-474 A Shingletown CA 2342 CITIZENS TELECOM DBA FRONTIER COMM OF TOULUMNE 724      

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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