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: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 975

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-975 A Natick MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2021-01-05   
508-975 0 Natick MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-975 1 Natick MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-06-30   
508-975 2 Natick MA   624H ONVOY SPECTRUM, LLC 128   2021-09-09   
508-975 3 Natick MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-06-30   
508-975 4 Natick MA   318J COMCAST IP PHONE LLC 128   2006-11-14   
508-975 5 Natick MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-07-30   
508-975 6 Natick MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-08-15   
508-975 7 Natick MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-08-30   
508-975 8 Natick MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-08-30   
508-975 9 Natick MA   624H ONVOY SPECTRUM, LLC 128   2021-12-20   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.