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: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 998

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-998 A Cambridge MA WRXBMAWACM2  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-998 0 Cambridge MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-998 1 Cambridge MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-998 2 Cambridge MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2006-04-01   
857-998 3 Cambridge MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2009-08-03   
857-998 4 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-10-07   
857-998 6 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-10-07   
857-998 7 Cambridge MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-998 8 Cambridge MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2005-09-21   
857-998 9 Cambridge MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.