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: 622

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-622 A Strasburg CO STBGCOXCPS0  2207 STRASBURG TEL. CO. 656      
303-622 0 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2020-02-13   
303-622 1 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2020-02-13   
303-622 3 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2013-11-15   
303-622 4 Strasburg CO STBGCOXCPS0  2207 STRASBURG TEL. CO. 656      
303-622 5 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2013-11-15   
303-622 6 Strasburg CO STBGCOXCPS0  2207 STRASBURG TEL. CO. 656      
303-622 8 Strasburg CO   624H ONVOY SPECTRUM, LLC 656   2025-02-09   
303-622 9 Strasburg CO STBGCOXCPS0  2207 STRASBURG TEL. CO. 656      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.