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: 631 [Rate centres in NPA 631] [Dial plan for NPA 631]

NXX: 628

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-628 A Northport NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-628 0 Northport NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-628 1 Northport NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-628 2 Northport NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-628 3 Northport NY WHPLNYGRDS5  7126 CABLEVISION LIGHTPATH, INC. - NY 132   2017-12-05   
631-628 4 Northport NY   1215 CORETEL NEW YORK, INC. - NY 132   2019-05-22   
631-628 5 Northport NY WHPLNYGRDS5  7126 CABLEVISION LIGHTPATH, INC. - NY 132   2017-12-05   
631-628 6 Northport NY WHPLNYGRDS5  7126 CABLEVISION LIGHTPATH, INC. - NY 132   2017-12-05   
631-628 7 Northport NY   1215 CORETEL NEW YORK, INC. - NY 132   2019-05-22   
631-628 8 Northport NY   1215 CORETEL NEW YORK, INC. - NY 132   2019-03-29   
631-628 9 Northport NY   515J IP HORIZON LLC 132   2020-06-05   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.