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: 809C INTRADO COMMUNICATIONS, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
719-779 5 Canon City CO   658   2026-11-01   
719-780 7 Pueblo-Main CO   658   2026-10-05   
720-405 A Denver CO DNVRCOMA16Z  656      
720-405 0 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-405 1 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-405 2 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-405 3 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-405 4 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-405 5 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-405 6 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-405 7 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-405 8 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-405 9 Denver CO DNVRCOMA16Z  656   2013-10-21   
720-678 0 Denver CO DNVRCOMA16Z  656   2019-11-24   
720-678 1 Denver CO DNVRCOMA16Z  656   2019-11-24   
720-678 8 Denver CO DNVRCOMA16Z  656   2019-11-24   
720-801 2 Georgetown CO   656   2026-11-01   
970-654 4 Glenwood Springs CO   656   2026-10-30   
970-760 5 Dillon CO   656   2026-11-01   
970-915 7 Grand Junction CO   656   2026-10-16   
970-916 7 Aspen CO   656   2026-11-01   
970-917 5 Durango CO   656   2026-10-23   
970-936 7 Greeley CO   656   2026-10-11   
970-940 7 Loveland CO   656   2026-10-26   
970-960 7 Montrose CO   656   2026-10-30   
983-221 7 Deckers CO   656   2026-11-01   
983-227 7 Fort Lupton CO   656   2026-10-23   
983-230 7 Longmont CO   656   2026-10-19   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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