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: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-666 A Barnegat NJ PSVLNJPLXBZ  965H FRACTEL, LLC 220      
640-666 0 Barnegat NJ   637C ONVOY, LLC - NJ 220   2019-08-16   
640-666 1 Barnegat NJ   637C ONVOY, LLC - NJ 220   2019-08-16   
640-666 2 Barnegat NJ   482F CORETEL NEW JERSEY, INC. - NJ 220   2019-05-03   
640-666 3 Barnegat NJ   482F CORETEL NEW JERSEY, INC. - NJ 220   2019-05-03   
640-666 4 Barnegat NJ   482F CORETEL NEW JERSEY, INC. - NJ 220   2019-05-03   
640-666 5 Barnegat NJ   482F CORETEL NEW JERSEY, INC. - NJ 220   2019-05-03   
640-666 6 Barnegat NJ   965H FRACTEL, LLC 220   2019-03-25   
640-666 7 Barnegat NJ   482F CORETEL NEW JERSEY, INC. - NJ 220   2019-05-03   
640-666 8 Barnegat NJ   482F CORETEL NEW JERSEY, INC. - NJ 220   2019-05-03   
640-666 9 Barnegat NJ   637C ONVOY, LLC - NJ 220   2020-07-05   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.