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.

South Laramie, CO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
970-435 A LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 0 LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 1 LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 2 CHYNWYMAEMD  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 654      
970-435 3 LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 4 LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 5 LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 6 LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 7 LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 8 LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 9 LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-499 A CSPRWYDN0MD  026D ONVOY, LLC - CO 654      
970-499 0 CHYNWYRF1MD  073H TELNYX LLC 654   2018-05-01   
970-499 1 CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2019-09-09   
970-499 2 CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2020-12-18   
970-499 3 CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2020-12-18   
970-499 4 CHYNWYMAXAX  508J CENTURYLINK COMMUNICATIONS, LLC 654   2015-03-18   
970-499 5 CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2012-12-12   
970-499 6 CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2012-12-12   
970-499 7 CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2007-09-29   
970-499 8 CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2012-12-12   
970-780 A CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654      
970-780 2 CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2021-12-13   
970-780 4 CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2022-02-05   
970-780 5 CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2021-08-23   
970-780 7 CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2021-11-07   
970-780 8 CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2021-11-07   
970-780 9 CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2021-11-18   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.