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: CATNMAAKPS0

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
508-306 5 Holliston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2006-05-19   
508-306 9 Holliston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2006-05-19   
508-310 A Natick MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-310 0 Natick MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-310 1 Natick MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-310 7 Natick MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-310 9 Natick MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-313 1 Brockton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2004-11-07   
508-313 5 Brockton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2004-11-07   
508-318 A Natick MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-318 0 Natick MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-318 2 Natick MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-321 9 Medway MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2008-08-28   
508-350 7 East Bridgewater MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2006-06-09   
508-355 A Marion MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-355 0 Marion MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-355 1 Marion MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-355 2 Marion MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-355 4 Marion MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-355 5 Marion MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-355 6 Marion MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-355 8 Marion MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-372 1 Whitinsville MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2008-01-02   
508-374 A Nantucket MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-374 0 Nantucket MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-374 5 Nantucket MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-374 6 Nantucket MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-374 7 Nantucket MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-374 8 Nantucket MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-401 A Wayland MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-401 2 Wayland MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2002-07-26   
508-401 6 Wayland MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2005-07-30   
508-401 9 Wayland MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2005-07-30   
508-408 A Brockton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-408 0 Brockton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-408 1 Brockton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-408 2 Brockton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-408 8 Brockton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2006-10-27   
508-408 9 Brockton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-417 A Hopkinton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-417 9 Hopkinton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-418 1 Hyannis MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2002-09-30   
508-418 7 Hyannis MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2005-07-30   
508-433 1 Natick MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-05-05   
508-434 7 Charlton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2004-01-19   
508-437 A Barnstable MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-437 0 Barnstable MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-437 5 Barnstable MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-437 6 Barnstable MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
508-437 8 Barnstable MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.