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: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 428

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-428 A Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      
605-428 0 Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      
605-428 1 Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      
605-428 2 Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      
605-428 3 Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      
605-428 4 Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      
605-428 5 Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      
605-428 6 Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      
605-428 7 Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      
605-428 9 Dell Rapids SD DLRPSDXADS1  1677 SIOUX VALLEY TEL DBA GOLDEN WEST TELECOMMUNICATION 640      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.