Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 720 [Rate centres in NPA 720] [Dial plan for NPA 720]

NXX: 838

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-838 A Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-838 0 Denver CO   6529 T-MOBILE USA, INC. 656      
720-838 1 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-12-16   
720-838 2 Denver CO   3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2009-10-08   
720-838 3 Denver CO   6529 T-MOBILE USA, INC. 656      
720-838 4 Denver CO   6529 T-MOBILE USA, INC. 656      
720-838 5 Denver CO   6529 T-MOBILE USA, INC. 656      
720-838 6 Denver CO   6529 T-MOBILE USA, INC. 656      
720-838 7 Denver CO   6529 T-MOBILE USA, INC. 656      
720-838 8 Denver CO   6529 T-MOBILE USA, INC. 656      
720-838 9 Denver CO   5562 METROPCS, INC. 656      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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