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.

NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 224

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-224 A Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 0 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 1 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 2 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 3 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 4 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 5 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 6 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 7 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 8 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      
857-224 9 Boston MA BSTNMAHADS9  9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.