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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NPA: 608 [Rate centres in NPA 608] [Dial plan for NPA 608]

NXX: 920

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-920 A Stoughton WI   321J HD CARRIER LLC 354   2025-09-08   
608-920 7 Stoughton WI   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 354   2025-12-18   
608-920 8 Stoughton WI   321J HD CARRIER LLC 354   2025-09-08   
608-920 9 Stoughton WI   321J HD CARRIER LLC 354   2025-09-08   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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