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]

Region: CO

OCN: 320E YMAX COMMUNICATIONS CORP. - CO

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

Last updated: Sun, 17 May 2026 03:26:51 UTC

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