Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: DNVTCO56AMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
303-957 A Denver CO 8465 GLOBAL CROSSING LOCAL SERVICES, INC. - CO 656      
303-957 0 Denver CO 8465 GLOBAL CROSSING LOCAL SERVICES, INC. - CO 656      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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