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
225-404 A Baton Rouge LA 9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 492      
318-444 A Alexandria LA 9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      
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      
408-976 A San Jose: South DA CA 7894 NORTH COUNTY COMMUNICATION CORPORATION - CA 722      
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      
442-730 A Victorville: Victorville DA CA MULT 730      
508-920 A Boston MA 9102 VERIZON NEW ENGLAND INC. 128      
520-676 A Tucson AZ 9636 QWEST CORPORATION 668      
561-991 A Boca Raton FL 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 46018      
615-404 A Nashville TN 9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 470      
617-920 A Cambridge MA 9102 VERIZON NEW ENGLAND INC. 128      
704-404 A Charlotte NC 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 422      
706-404 A Columbus GA 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 438      
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      
843-404 A Charleston SC 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 436      
843-975 A Florence SC 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 432      
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: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.