Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 640 [Rate centres in NPA 640] [Dial plan for NPA 640]

NXX: 880

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-880 A Trenton NJ   193E 8X8, INC. 222   2026-08-29   
640-880 1 Trenton NJ   193E 8X8, INC. 222   2026-08-29   
640-880 7 Trenton NJ   114J EXIANT COMMUNICATIONS LLC 222   2026-10-29   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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