Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 402 [Rate centres in NPA 402] [Dial plan for NPA 402]

NXX: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
402-638 A Waterbury NE NWCSNEXS0MD  1576 NORTHEAST NEBRASKA TEL. CO. 644      
402-638 0 Waterbury NE NWCSNEXS0MD  1576 NORTHEAST NEBRASKA TEL. CO. 644   2023-05-02   
402-638 1 Waterbury NE NWCSNEXS0MD  1576 NORTHEAST NEBRASKA TEL. CO. 644      
402-638 2 Waterbury NE NWCSNEXS0MD  1576 NORTHEAST NEBRASKA TEL. CO. 644      
402-638 3 Waterbury NE   145J TERRA NOVA TELECOM INC. 644   2025-07-18   
402-638 4 Waterbury NE NWCSNEXS0MD  1576 NORTHEAST NEBRASKA TEL. CO. 644      
402-638 5 Waterbury NE NWCSNEXS0MD  1576 NORTHEAST NEBRASKA TEL. CO. 644   2023-05-02   
402-638 7 Waterbury NE   145J TERRA NOVA TELECOM INC. 644   2026-03-30   
402-638 9 Waterbury NE NWCSNEXS0MD  1576 NORTHEAST NEBRASKA TEL. CO. 644   2023-05-02   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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