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.

Marlboro, MA

1 2 3 4 5 6 7 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
508-229 A MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-251 A NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-251 0 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-251 1 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-251 2 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-251 3 CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2006-10-27   
508-251 4 CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2008-02-18   
508-251 5 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-04-07   
508-251 6 CMBRMAORDS0  7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 128   2008-09-30   
508-251 7 BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2006-10-27   
508-251 8 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-11-19   
508-251 9 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
508-263 A MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-263 0 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-02-21   
508-263 1 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-263 2 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-263 3 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-263 4 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-263 5 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-263 6 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-263 7 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-263 8 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-263 9 BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2003-07-28   
508-281 A FRMNMAUNX0X  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
508-281 0 OXFRMAAKPS0  293C CHARTER FIBERLINK MA-CCO, LLC - MA 128   2005-01-01   
508-281 1 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-01-17   
508-281 2 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-01-27   
508-281 3 BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2005-07-13   
508-281 4 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2003-03-24   
508-281 5 FRMNMAUNX0X  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
508-281 6 FRMNMAUNX0X  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
508-281 7 FRMNMAUNX0X  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
508-281 8 FRMNMAUNX0X  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128   2005-11-10   
508-281 9 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-09-10   
508-303 A MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-305 A FRMNMAWADS0  7421 AT&T - LOCAL 128      
508-305 0 FRMNMAWADS0  7421 AT&T - LOCAL 128      
508-305 1 FRMNMAWADS0  7421 AT&T - LOCAL 128      
508-305 2 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2007-02-08   
508-305 3 FRMNMAWADS0  7421 AT&T - LOCAL 128      
508-305 4 FRMNMAWADS0  7421 AT&T - LOCAL 128      
508-305 5 BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2019-03-22   
508-305 6 FRMNMAWADS0  7421 AT&T - LOCAL 128      
508-305 7 FRMNMAWADS0  7421 AT&T - LOCAL 128      
508-305 8 FRMNMAWADS0  7421 AT&T - LOCAL 128      
508-305 9 FRMNMAWADS0  7421 AT&T - LOCAL 128      
508-357 A MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 0 BSTPMALLZMD  506J TWILIO INTERNATIONAL, INC. 128   2020-12-19   
508-357 1 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 2 MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      

1 2 3 4 5 6 7 >>

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.