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.

OCN: 026D ONVOY, LLC - CO

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
720-817 8 Strasburg CO DNVTCOZIDS1  656   2022-08-22   
720-817 9 Strasburg CO DNVTCOZIDS1  656   2023-07-24   
720-821 A Longmont CO DNVTCOZIDS1  656      
720-821 0 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-821 1 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-821 2 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-821 3 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-821 4 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-821 5 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-821 6 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-821 7 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-821 8 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-821 9 Longmont CO DNVTCOZIDS1  656   2021-03-06   
720-823 0 Denver CO DNVTCOZIDS1  656   2021-08-25   
720-823 2 Denver CO DNVTCOZIDS1  656   2021-03-12   
720-823 3 Denver CO DNVTCOZIDS1  656   2021-03-12   
720-823 4 Denver CO DNVTCOZIDS1  656   2021-03-12   
720-823 5 Denver CO DNVTCOZIDS1  656   2021-03-12   
720-823 6 Denver CO DNVTCOZIDS1  656   2021-03-12   
720-823 7 Denver CO DNVTCOZIDS1  656   2021-03-12   
720-823 8 Denver CO DNVTCOZIDS1  656   2021-03-12   
720-823 9 Denver CO DNVTCOZIDS1  656   2021-03-12   
720-824 1 Hudson CO DNVTCOZIDS1  656   2022-06-16   
720-824 3 Hudson CO DNVTCOZIDS1  656   2021-12-16   
720-824 4 Hudson CO DNVTCOZIDS1  656   2021-12-16   
720-824 6 Hudson CO DNVTCOZIDS1  656   2022-07-28   
720-828 5 Denver CO DNVTCOZIDS1  656   2018-12-30   
720-828 6 Denver CO DNVTCOZIDS1  656   2018-12-30   
720-828 7 Denver CO DNVTCOZIDS1  656   2018-12-30   
720-828 8 Denver CO DNVTCOZIDS1  656   2018-12-30   
720-832 3 Hudson CO DNVTCOZIDS1  656   2023-07-22   
720-832 9 Hudson CO DNVTCOZIDS1  656   2023-09-29   
720-833 4 Denver CO DNVTCOZIDS1  656   2007-11-11   
720-833 5 Denver CO DNVTCOZIDS1  656   2007-11-11   
720-833 7 Denver CO DNVTCOZIDS1  656   2008-04-11   
720-835 0 Denver CO DNVTCOZIDS1  656   2016-01-22   
720-835 1 Denver CO DNVTCOZIDS1  656   2016-03-21   
720-842 7 Denver CO DNVTCOZIDS1  656   2008-10-24   
720-843 1 Denver CO DNVTCOZIDS1  656   2022-07-26   
720-843 3 Denver CO DNVTCOZIDS1  656   2022-07-26   
720-844 0 Denver CO DNVTCOZIDS1  656   2021-07-02   
720-844 3 Denver CO DNVTCOZIDS1  656   2021-07-02   
720-844 7 Denver CO DNVTCOZIDS1  656   2021-07-02   
720-844 8 Denver CO DNVTCOZIDS1  656   2021-07-02   
720-844 9 Denver CO DNVTCOZIDS1  656   2021-07-02   
720-850 5 Denver CO DNVTCOZIDS1  656   2021-07-12   
720-850 8 Denver CO DNVTCOZIDS1  656   2021-07-12   
720-853 5 Longmont CO DNVTCOZIDS1  656   2021-12-26   
720-853 8 Longmont CO DNVTCOZIDS1  656   2021-12-26   
720-856 A Fort Lupton CO HLYKCOXC0MD  656      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.