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: 303 [Rate centres in NPA 303] [Dial plan for NPA 303]

NXX: 900

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-900 A Georgetown CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-900 0 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
303-900 1 Georgetown CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
303-900 2 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
303-900 3 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
303-900 4 Georgetown CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-900 5 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
303-900 6 Georgetown CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
303-900 7 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
303-900 8 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
303-900 9 Georgetown CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.