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.

Switch: MDSNWI11X4Y

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
779-475 8 South Beloit IL 6529 T-MOBILE USA, INC. 354   2014-05-16   
779-475 9 South Beloit IL 5562 METROPCS, INC. 354   2014-10-26   
779-699 0 South Beloit IL 6529 T-MOBILE USA, INC. 354   2022-04-20   
779-699 1 South Beloit IL 6529 T-MOBILE USA, INC. 354   2022-04-20   
779-699 2 South Beloit IL 6529 T-MOBILE USA, INC. 354   2022-04-20   

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Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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