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: 600

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-600 A Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222      
640-600 0 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2019-09-19   
640-600 1 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2019-09-19   
640-600 2 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2019-09-19   
640-600 3 Medford NJ CMDNNJCEXFZ  264F PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 222   2020-02-28   
640-600 4 Medford NJ CMDNNJCE58Z  318J COMCAST IP PHONE, LLC 222   2019-09-23   
640-600 5 Medford NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2026-09-11   
640-600 6 Medford NJ CMDNNJCE57Z  965H FRACTEL, LLC 222   2020-03-12   
640-600 7 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-03-02   
640-600 8 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2020-07-05   
640-600 9 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2020-07-05   

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

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