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: 234

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-234 A Plainsboro NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
640-234 0 Plainsboro NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2023-10-21   
640-234 1 Plainsboro NJ   637C ONVOY, LLC - NJ 222   2024-03-01   
640-234 2 Plainsboro NJ   637C ONVOY, LLC - NJ 222   2024-04-05   
640-234 3 Plainsboro NJ   637C ONVOY, LLC - NJ 222   2024-04-05   
640-234 7 Plainsboro NJ CMDNNJCEXFZ  264F PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 222   2023-09-28   
640-234 8 Plainsboro NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222   2022-10-22   
640-234 9 Plainsboro NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222   2022-10-22   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.