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.
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Switch: RCFRILRCMMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
779-203 A Rockford IL 6529 T-MOBILE USA, INC. 360      
779-238 A Rockford IL 6529 T-MOBILE USA, INC. 360      
779-300 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-378 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-505 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-509 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-516 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-519 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-540 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-608 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-616 A Freeport IL 6529 T-MOBILE USA, INC. 360      
815-621 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-650 A Freeport IL 5562 METROPCS, INC. 360      
815-670 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-703 A Rockford IL 6529 T-MOBILE USA, INC. 360      
815-914 A Rockford IL 5562 METROPCS, INC. 360      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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