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.

Switch: MRBOMAFZDS0

<< 1 2 3

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
978-933 5 Andover MA 7135 TC SYSTEMS, INC. 128      
978-942 A Lowell MA 7135 TC SYSTEMS, INC. 128      
978-942 2 Lowell MA 7135 TC SYSTEMS, INC. 128   2011-11-04   
978-955 A Lowell MA 7135 TC SYSTEMS, INC. 128      
978-955 3 Lowell MA 7135 TC SYSTEMS, INC. 128   2016-03-31   
978-967 1 Lowell MA 7135 TC SYSTEMS, INC. 128      
978-967 3 Lowell MA 7135 TC SYSTEMS, INC. 128      

<< 1 2 3

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.