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: 906 [Rate centres in NPA 906] [Dial plan for NPA 906]

NXX: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-251 A Marquette MI   991E BANDWIDTH.COM CLEC, LLC - MI 342      
906-251 0 Marquette MI MRQTMIMNVMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 342      
906-251 1 Marquette MI MRQTMIMNVMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 342      
906-251 2 Marquette MI   991E BANDWIDTH.COM CLEC, LLC - MI 342   2025-10-05   
906-251 3 Marquette MI MRQTMIMNYMD  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 342   2019-01-15   
906-251 8 Marquette MI MRQTMIMNVMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 342      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.