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: 856

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-856 A Fort Lupton CO HLYKCOXC0MD  026D ONVOY, LLC - CO 656      
720-856 0 Fort Lupton CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2021-12-25   
720-856 1 Fort Lupton CO   515J IP HORIZON LLC 656   2022-04-29   
720-856 2 Fort Lupton CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-12-26   
720-856 3 Fort Lupton CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-12-26   
720-856 4 Fort Lupton CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-12-26   
720-856 5 Fort Lupton CO AURSCOFW2MD  073H TELNYX LLC 656   2022-05-22   
720-856 6 Fort Lupton CO DNVTCOZI6MD  073H TELNYX LLC 656   2022-09-08   
720-856 7 Fort Lupton CO DNVRCO26DMD  197D VONAGE AMERICA LLC 656   2022-07-22   
720-856 8 Fort Lupton CO   145J TERRA NOVA TELECOM INC. 656   2024-02-14   
720-856 9 Fort Lupton CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2021-12-26   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.