Local Calling Guide

Area code/prefix search

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Longmont, CO

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
983-226 4   321J HD CARRIER LLC 656   2025-11-27   
983-226 5   321J HD CARRIER LLC 656   2025-11-27   
983-226 6   321J HD CARRIER LLC 656   2025-11-27   
983-226 7   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2025-11-28   
983-226 8   026D ONVOY, LLC - CO 656   2025-11-28   
983-226 9   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2025-11-28   
983-983 A DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656      
983-983 0 DNVRCOMA51Z  839J EON TELECOM, INC. 656   2023-06-03   
983-983 1 DNVTCOZIGMD  732J NUSO, LLC 656   2023-12-28   
983-983 2 DNVTCOZIGMD  732J NUSO, LLC 656   2023-12-28   
983-983 3 DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656   2023-06-02   
983-983 4 DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656   2023-06-02   
983-983 5 DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656   2023-06-02   
983-983 6 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2024-04-04   
983-983 7 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2023-09-08   
983-983 8 DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2023-09-08   
983-983 9 DNVRCO26XWX  616J LEAP TELECOM, LLC 656   2023-06-05   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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