Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 303 [Rate centres in NPA 303] [Dial plan for NPA 303]

NXX: 353

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-353 A Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
303-353 0 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
303-353 1 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
303-353 2 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
303-353 3 Denver CO DNVRCOMDDS1  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
303-353 4 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
303-353 5 Denver CO DNVRCOMDDS1  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
303-353 6 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
303-353 7 Denver CO DNVRCOMDDS1  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
303-353 8 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
303-353 9 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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