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: NWTNMAWAVMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
978-362 A Billerica MA 318J COMCAST IP PHONE, LLC 128      
978-409 A Andover MA 318J COMCAST IP PHONE, LLC 128      
978-432 A Rowley MA 318J COMCAST IP PHONE, LLC 128      
978-447 A Wilmington MA 318J COMCAST IP PHONE, LLC 128      
978-455 A Lowell MA 318J COMCAST IP PHONE, LLC 128      
978-496 A Westford MA 318J COMCAST IP PHONE, LLC 128      
978-510 A West Newbury MA 318J COMCAST IP PHONE, LLC 128      
978-561 A Topsfield MA 318J COMCAST IP PHONE, LLC 128      
978-563 A Sterling MA 318J COMCAST IP PHONE, LLC 128      
978-594 A Salem MA 318J COMCAST IP PHONE, LLC 128      
978-626 A Hamilton MA 318J COMCAST IP PHONE, LLC 128      
978-634 A Bolton MA 318J COMCAST IP PHONE, LLC 128      
978-733 A Clinton MA 318J COMCAST IP PHONE, LLC 128      
978-769 A Georgetown MA 318J COMCAST IP PHONE, LLC 128      
978-770 A Lowell MA 318J COMCAST IP PHONE, LLC 128      
978-969 A Beverly MA 318J COMCAST IP PHONE, LLC 128      

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

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