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.

Chelsea, MA

<< 1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
617-461 5   5562 METROPCS, INC. 128      
617-461 6   5562 METROPCS, INC. 128      
617-461 7   5562 METROPCS, INC. 128      
617-461 8   5562 METROPCS, INC. 128      
617-461 9   5562 METROPCS, INC. 128      
617-466 A NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
617-466 0   318J COMCAST IP PHONE, LLC 128      
617-466 1   318J COMCAST IP PHONE, LLC 128      
617-466 2   318J COMCAST IP PHONE, LLC 128      
617-466 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2009-01-15   
617-466 4   829J PAETEC ITEL, LLC 128   2007-01-08   
617-466 5   829J PAETEC ITEL, LLC 128   2007-01-08   
617-466 6   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-01-02   
617-466 7   892D ONVOY, LLC - MA 128   2023-08-17   
617-466 8   318J COMCAST IP PHONE, LLC 128   2019-05-10   
617-466 9   990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
617-660 A CHLSMACHDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-819 A CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
617-819 0   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2020-08-24   
617-819 1   892D ONVOY, LLC - MA 128   2010-03-15   
617-819 2   892D ONVOY, LLC - MA 128   2021-03-06   
617-819 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
617-819 4   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-02-19   
617-819 5   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-11-15   
617-819 6   624H ONVOY SPECTRUM, LLC 128   2021-04-08   
617-819 7   892D ONVOY, LLC - MA 128   2021-04-06   
617-819 8   892D ONVOY, LLC - MA 128   2010-04-07   
617-819 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
617-884 A CHLSMACHDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-887 A CHLSMACHDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-889 A CHLSMACHDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-958 A   892D ONVOY, LLC - MA 128      
617-958 0   073H TELNYX LLC 128   2021-03-04   
617-958 1   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-06-26   
617-958 2   892D ONVOY, LLC - MA 128   2020-06-21   
617-958 3   892D ONVOY, LLC - MA 128   2021-04-06   
617-958 4   892D ONVOY, LLC - MA 128   2021-04-06   
617-958 5   892D ONVOY, LLC - MA 128   2020-03-25   
617-958 6   892D ONVOY, LLC - MA 128   2020-03-25   
617-958 7   892D ONVOY, LLC - MA 128   2020-03-25   
617-958 8   892D ONVOY, LLC - MA 128   2020-03-25   
617-958 9   990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-323 A CHLSMACHDS0  9102 VERIZON NEW ENGLAND INC. 128      
857-323 0   990E BANDWIDTH.COM CLEC, LLC - MA 128   2013-04-21   
857-323 1   990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-10-16   
857-323 2   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-05-17   
857-323 3   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-05-17   
857-323 4   732H BARR TELL USA, INC. - MA 128   2015-12-31   
857-323 5   892D ONVOY, LLC - MA 128   2014-10-10   
857-323 6   892D ONVOY, LLC - MA 128   2014-10-10   

<< 1 2 3 >>

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.