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: 332

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-332 A Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-332 0 Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-332 1 Naperville IL NPVLILNADS0  9329 ILLINOIS BELL TEL CO 358      
331-332 2 Naperville IL NPVLILNADS0  9329 ILLINOIS BELL TEL CO 358      
331-332 3 Naperville IL NPVLILNADS0  9329 ILLINOIS BELL TEL CO 358      
331-332 4 Naperville IL NPVLILNADS0  9329 ILLINOIS BELL TEL CO 358      
331-332 5 Naperville IL NPVLILNADS0  9329 ILLINOIS BELL TEL CO 358      
331-332 6 Naperville IL NPVLILNADS0  9329 ILLINOIS BELL TEL CO 358      
331-332 7 Naperville IL NPVLILNADS0  9329 ILLINOIS BELL TEL CO 358      
331-332 8 Naperville IL NPVLILNADS0  9329 ILLINOIS BELL TEL CO 358      
331-332 9 Naperville IL NPVLILNADS0  9329 ILLINOIS BELL TEL CO 358      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.