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: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 208

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-208 A Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-208 0 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-208 1 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-208 2 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-208 3 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-208 4 Aurora IL CHCGILWUSMD  145J TERRA NOVA TELECOM INC. 358      
331-208 5 Aurora IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
331-208 6 Aurora IL   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-208 7 Aurora IL   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-208 8 Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-208 9 Aurora IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.