Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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