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: CMBRMA01DS5

1 2 3 4 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
617-218 A Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-218 0 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-218 1 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-218 2 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-218 3 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-218 4 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-218 5 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-218 6 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-218 8 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-218 9 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-250 A Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-250 1 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-250 2 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-250 3 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-250 4 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-250 5 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-250 6 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-250 9 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-409 4 Chelsea MA 7135 TC SYSTEMS, INC. 128   2002-05-18   
617-431 A Newton MA 7135 TC SYSTEMS, INC. 128      
617-431 9 Newton MA 7135 TC SYSTEMS, INC. 128      
617-454 A Newton MA 7135 TC SYSTEMS, INC. 128      
617-454 0 Newton MA 7135 TC SYSTEMS, INC. 128      
617-454 1 Newton MA 7135 TC SYSTEMS, INC. 128      
617-454 2 Newton MA 7135 TC SYSTEMS, INC. 128      
617-454 3 Newton MA 7135 TC SYSTEMS, INC. 128      
617-454 6 Newton MA 7135 TC SYSTEMS, INC. 128      
617-454 9 Newton MA 7135 TC SYSTEMS, INC. 128      
617-528 A Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-528 1 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-528 2 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-528 3 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-528 4 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-528 5 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-528 6 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-528 7 Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-544 4 Everett MA 7135 TC SYSTEMS, INC. 128   2002-05-18   
617-612 A Watertown MA 7135 TC SYSTEMS, INC. 128      
617-612 1 Watertown MA 7135 TC SYSTEMS, INC. 128      
617-612 2 Watertown MA 7135 TC SYSTEMS, INC. 128      
617-612 7 Watertown MA 7135 TC SYSTEMS, INC. 128      
617-612 9 Watertown MA 7135 TC SYSTEMS, INC. 128      
617-613 A Cambridge MA 7135 TC SYSTEMS, INC. 128      
617-616 A Somerville MA 7135 TC SYSTEMS, INC. 128      
617-616 1 Somerville MA 7135 TC SYSTEMS, INC. 128      
617-616 4 Somerville MA 7135 TC SYSTEMS, INC. 128      
617-616 6 Somerville MA 7135 TC SYSTEMS, INC. 128      
617-616 7 Somerville MA 7135 TC SYSTEMS, INC. 128      
617-663 A Newton MA 7135 TC SYSTEMS, INC. 128      
617-663 1 Newton MA 7135 TC SYSTEMS, INC. 128      

1 2 3 4 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.