Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 720 [Rate centres in NPA 720] [Dial plan for NPA 720]

NXX: 847

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-847 A Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656      
720-847 0 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   
720-847 1 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   
720-847 2 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   
720-847 3 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   
720-847 4 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   
720-847 5 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   
720-847 6 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   
720-847 7 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   
720-847 8 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   
720-847 9 Denver CO AURRCOMADS0  9636 QWEST CORPORATION 656   2003-12-27   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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