Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 640 [Rate centres in NPA 640] [Dial plan for NPA 640]

NXX: 644

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-644 A Medford NJ CMDNNJCE51Z  624H ONVOY SPECTRUM, LLC 222      
640-644 0 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-03-02   
640-644 1 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-04-05   
640-644 2 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-04-05   
640-644 3 Medford NJ CMDNNJCEXFZ  264F PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 222   2024-09-28   
640-644 4 Medford NJ CMDNNJCE51Z  624H ONVOY SPECTRUM, LLC 222   2022-01-29   
640-644 5 Medford NJ CMDNNJCE51Z  624H ONVOY SPECTRUM, LLC 222   2022-01-29   
640-644 6 Medford NJ CMDNNJCE51Z  624H ONVOY SPECTRUM, LLC 222   2021-06-06   
640-644 7 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2022-11-27   
640-644 8 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2022-11-27   
640-644 9 Medford NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2022-11-27   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.