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.

OCN: 365E YMAX COMMUNICATIONS CORP. - SD

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
605-368 6 Harrisburg-Tea SD SXFLSD100MD  640      
605-540 6 North Sioux City SD SXCYIAAT7MD  630      
605-540 7 North Sioux City SD SXCYIAAT7MD  630      
605-540 8 North Sioux City SD SXCYIAAT7MD  630      
605-540 9 North Sioux City SD SXCYIAAT7MD  630      
605-731 8 Sioux Falls SD SXFLSD100MD  640      
605-743 6 Harrisburg-Tea SD SXFLSD100MD  640      
605-743 7 Harrisburg-Tea SD SXFLSD100MD  640      
605-838 A Sioux Falls SD SXFLSD100MD  640      
605-838 0 Sioux Falls SD SXFLSD100MD  640      
605-838 3 Sioux Falls SD SXFLSD100MD  640      

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

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