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: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 991

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-991 A Champaign-Urbana IL CHMPILCPXBY  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 370      
217-991 0 Champaign-Urbana IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 370   2016-10-14   
217-991 1 Champaign-Urbana IL   515J IP HORIZON LLC 370   2016-08-13   
217-991 2 Champaign-Urbana IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 370   2019-09-05   
217-991 3 Champaign-Urbana IL   5562 METROPCS, INC. 370   2021-11-11   
217-991 8 Champaign-Urbana IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 370   2021-10-10   
217-991 9 Champaign-Urbana IL   321J HD CARRIER LLC 370   2025-10-11   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.