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: 627

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-627 A Denver CO NGLNCOMADS0  9636 QWEST CORPORATION 656      
720-627 0 Denver CO   9636 QWEST CORPORATION 656   2012-04-05   
720-627 1 Denver CO   9636 QWEST CORPORATION 656   2012-04-05   
720-627 2 Denver CO   9636 QWEST CORPORATION 656   2012-04-05   
720-627 3 Denver CO   9636 QWEST CORPORATION 656   2012-04-05   
720-627 4 Denver CO   9636 QWEST CORPORATION 656   2012-04-05   
720-627 5 Denver CO   318J COMCAST IP PHONE, LLC 656   2012-11-21   
720-627 6 Denver CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2012-11-21   
720-627 7 Denver CO   026D ONVOY, LLC - CO 656   2012-11-21   
720-627 8 Denver CO   026D ONVOY, LLC - CO 656   2012-11-21   
720-627 9 Denver CO   6529 T-MOBILE USA, INC. 656   2012-11-21   

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

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