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: 745

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-745 A Longmont CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-745 0 Longmont CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2015-08-17   
720-745 1 Longmont CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2015-10-12   
720-745 2 Longmont CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2015-10-12   
720-745 3 Longmont CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2016-01-01   
720-745 4 Longmont CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2015-06-08   
720-745 5 Longmont CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2015-08-07   
720-745 6 Longmont CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2015-08-07   
720-745 7 Longmont CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2015-06-10   
720-745 8 Longmont CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2015-11-27   
720-745 9 Longmont CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-12-25   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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