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

NXX: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-331 A Platteville WI MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-331 0 Platteville WI MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-331 1 Platteville WI   3839 CHARTER FIBERLINK, LLC - WI 354   2025-02-16   
608-331 2 Platteville WI   5562 METROPCS, INC. 354   2025-03-30   
608-331 3 Platteville WI MDSNWI11XOY  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 354   2025-04-21   
608-331 4 Platteville WI   5562 METROPCS, INC. 354   2025-03-30   
608-331 5 Platteville WI   5562 METROPCS, INC. 354   2025-03-30   
608-331 6 Platteville WI LCRSWIXCIMD  508J CENTURYLINK COMMUNICATIONS, LLC 354   2018-02-23   
608-331 7 Platteville WI MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-331 8 Platteville WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2025-01-31   
608-331 9 Platteville WI   6529 T-MOBILE USA, INC. 354   2025-02-22   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.