Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 602

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-602 A Watertown SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-10-12   
605-602 0 Watertown SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-10-12   
605-602 1 Watertown SD   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640   2026-03-04   
605-602 5 Watertown SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-10-12   
605-602 9 Watertown SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-10-12   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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