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.
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Switch: DNVRCO26DS5

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
983-888 0 Denver CO 278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2023-09-08   
983-983 8 Longmont CO 278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2023-09-08   

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

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