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: 344

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-344 A Fort Dix NJ CMDNNJCE51Z  624H ONVOY SPECTRUM, LLC 222      
640-344 0 Fort Dix NJ   637C ONVOY, LLC - NJ 222   2022-09-25   
640-344 1 Fort Dix NJ   624H ONVOY SPECTRUM, LLC 222   2022-01-17   
640-344 2 Fort Dix NJ   624H ONVOY SPECTRUM, LLC 222   2022-01-17   
640-344 3 Fort Dix NJ   624H ONVOY SPECTRUM, LLC 222   2021-06-05   
640-344 4 Fort Dix NJ   5562 METROPCS, INC. 222   2023-08-02   
640-344 5 Fort Dix NJ   637C ONVOY, LLC - NJ 222   2021-07-15   
640-344 6 Fort Dix NJ   637C ONVOY, LLC - NJ 222   2021-07-15   
640-344 7 Fort Dix NJ   637C ONVOY, LLC - NJ 222   2022-09-25   
640-344 8 Fort Dix NJ   516J TON80 COMMUNICATIONS, LLC 222   2022-04-21   
640-344 9 Fort Dix NJ   264F PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 222   2021-10-06   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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