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: 715 [Rate centres in NPA 715] [Dial plan for NPA 715]

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
715-312 A Holcombe WI EUCLWI01XOX  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 352      
715-312 0 Holcombe WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 352      
715-312 1 Holcombe WI   624H ONVOY SPECTRUM, LLC 352   2024-03-25   
715-312 2 Holcombe WI   225C ONVOY, LLC - WI 352   2019-01-18   
715-312 4 Holcombe WI   225C ONVOY, LLC - WI 352   2021-03-29   
715-312 7 Holcombe WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 352   2014-12-03   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.