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: 274 [Rate centres in NPA 274] [Dial plan for NPA 274]

NXX: 207

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
274-207 A Green Bay WI GNBYWIELLMD  616J LEAP TELECOM, LLC 350   2025-02-16   
274-207 0 Green Bay WI GNBYWIELLMD  616J LEAP TELECOM, LLC 350   2025-02-16   
274-207 1 Green Bay WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 350   2025-04-03   
274-207 2 Green Bay WI   490J DISH WIRELESS, LLC 350   2025-05-30   
274-207 3 Green Bay WI   490J DISH WIRELESS, LLC 350   2025-10-26   
274-207 4 Green Bay WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350   2025-07-27   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.