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: 781 [Rate centres in NPA 781] [Dial plan for NPA 781]

NXX: 870

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
781-870 A Malden MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
781-870 0 Malden MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-04-01   
781-870 1 Malden MA   7135 TC SYSTEMS, INC. 128      
781-870 2 Malden MA   624H ONVOY SPECTRUM, LLC 128   2021-11-21   
781-870 3 Malden MA   624H ONVOY SPECTRUM, LLC 128   2021-11-21   
781-870 4 Malden MA   892D ONVOY, LLC - MA 128   2022-09-25   
781-870 5 Malden MA   892D ONVOY, LLC - MA 128   2022-09-25   
781-870 6 Malden MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-02-03   
781-870 7 Malden MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-09-01   
781-870 8 Malden MA   892D ONVOY, LLC - MA 128   2019-07-01   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.