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: CMBRMAORDSG

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
978-843 A Sterling MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-864 A West Newbury MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-865 A Gloucester MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-878 A Fitchburg MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-890 A Essex MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-894 A Templeton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-903 A Rowley MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-910 A Salem MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-919 A Gardner MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-925 A Pepperell MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-938 A Maynard MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-951 A Littleton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-956 A Fitchburg MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-961 A Newburyport MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-965 A Lawrence MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-986 A Topsfield MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-993 A Beverly MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      

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

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