Local Calling Guide

Area code/prefix search

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

NXX: 396

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-396 A Denver CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656      
720-396 0 Denver CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656   2009-10-26   
720-396 1 Denver CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656   2009-10-26   
720-396 2 Denver CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656   2009-10-26   
720-396 3 Denver CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656   2009-10-26   
720-396 4 Denver CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656   2009-10-26   
720-396 5 Denver CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656   2009-10-26   
720-396 6 Denver CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656   2009-10-26   
720-396 7 Denver CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656   2009-10-26   
720-396 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2026-04-13   
720-396 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2026-04-13   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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