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.

Switch: DNVTCO56DS8

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
303-225 6 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-226 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-228 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-242 5 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2005-02-19   
303-242 8 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2005-02-02   
303-261 8 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-05-16   
303-268 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-285 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-301 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-301 0 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-301 1 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-301 2 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-301 3 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-301 6 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-301 7 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-301 8 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-301 9 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-309 0 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2007-12-04   
303-309 1 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-309 2 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-309 4 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-309 8 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-325 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-325 0 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-325 2 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-325 8 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-325 9 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-327 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-327 1 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-327 2 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-327 3 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-327 6 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-327 9 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-345 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-345 2 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-345 6 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-345 9 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-351 5 Deckers CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-05-19   
303-376 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-381 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-385 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-385 1 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-385 2 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-385 4 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-385 5 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-385 8 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-386 A Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-386 1 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-386 7 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-386 9 Denver CO 6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.