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: 630 [Rate centres in NPA 630] [Dial plan for NPA 630]

NXX: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
630-278 A Roselle IL SCBGILRRGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
630-278 0 Roselle IL   5562 METROPCS, INC. 358   2005-01-02   
630-278 1 Roselle IL   5562 METROPCS, INC. 358   2005-01-02   
630-278 2 Roselle IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2021-12-25   
630-278 3 Roselle IL   224C ONVOY, LLC 358   2021-12-13   
630-278 4 Roselle IL   224C ONVOY, LLC 358   2021-12-13   
630-278 5 Roselle IL   224C ONVOY, LLC 358   2021-12-13   
630-278 6 Roselle IL   224C ONVOY, LLC 358   2021-12-13   
630-278 7 Roselle IL   6529 T-MOBILE USA, INC. 358   2024-09-19   
630-278 8 Roselle IL   6529 T-MOBILE USA, INC. 358   2024-03-07   
630-278 9 Roselle IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.