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: 599

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-599 A Riverhead NY GNBGNY01AMD  6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 132      
631-599 0 Riverhead NY GNBGNY01AMD  6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 132   2009-10-04   
631-599 1 Riverhead NY GNBGNY01AMD  6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 132   2009-10-04   
631-599 2 Riverhead NY GNBGNY01AMD  6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 132   2010-02-05   
631-599 3 Riverhead NY GNBGNY01AMD  6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 132   2010-02-05   
631-599 4 Riverhead NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2009-04-14   
631-599 5 Riverhead NY NYCMNY37FMD  705G WIDE VOICE, LLC - NY 132   2014-08-01   
631-599 6 Riverhead NY GNBGNY01AMD  6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 132   2014-10-26   
631-599 7 Riverhead NY NYCMNY83D1S  282E YMAX COMMUNICATIONS CORP. - NY 132   2009-01-21   
631-599 8 Riverhead NY GNBGNY01AMD  6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 132   2010-02-05   
631-599 9 Riverhead NY GNBGNY01AMD  6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 132   2010-06-14   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.