Local Calling Guide

Area code/prefix search

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NPA: 303 [Rate centres in NPA 303] [Dial plan for NPA 303]

NXX: 354

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-354 A Denver CO DNVRCOMDDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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