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: XXXXXXXXXXX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
339-920 A Waltham MA 9102 VERIZON NEW ENGLAND INC. 128      
351-920 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      
401-920 A Providence RI 9102 VERIZON NEW ENGLAND INC. 130      
410-201 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
413-920 A Holyoke MA 9102 VERIZON NEW ENGLAND INC. 126      
414-599 A Milwaukee Zone 1 WI 9327 WISCONSIN BELL INC 356      
508-920 A Boston MA 9102 VERIZON NEW ENGLAND INC. 128      
520-676 A Tucson AZ 9636 QWEST CORPORATION 668      
617-920 A Cambridge MA 9102 VERIZON NEW ENGLAND INC. 128      
718-201 A New York City Zone 06 NY 9104 VERIZON NEW YORK, INC. 132      
774-920 A Brockton MA 9102 VERIZON NEW ENGLAND INC. 128      
781-920 A Waltham MA 9102 VERIZON NEW ENGLAND INC. 128      
857-920 A Cambridge MA 9102 VERIZON NEW ENGLAND INC. 128      
973-717 A Linden NJ 9206 VERIZON NEW JERSEY, INC. 224      
978-920 A Lowell MA 9102 VERIZON NEW ENGLAND INC. 128      

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

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