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: CMBSMA013MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
774-397 A Sturbridge MA 428H AIRUS, INC. - MA 128      
774-398 A Brockton MA 428H AIRUS, INC. - MA 128      
774-403 A Medfield MA 428H AIRUS, INC. - MA 128      
857-302 A Boston MA 428H AIRUS, INC. - MA 128      
857-355 A Everett MA 428H AIRUS, INC. - MA 128      
978-519 A Haverhill MA 428H AIRUS, INC. - MA 128      
978-718 A Ashburnham MA 428H AIRUS, INC. - MA 128      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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