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: SXFLSDCODS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
605-312 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-322 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-328 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-330 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-331 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-332 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-333 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-334 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-335 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-336 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-338 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-339 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-357 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-367 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-373 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-404 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-504 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-575 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-731 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-782 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-977 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-978 A Sioux Falls SD 9631 QWEST CORPORATION 640      
605-988 A Sioux Falls SD 9631 QWEST CORPORATION 640      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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