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: 307

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-307 A Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128      
857-307 0 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   
857-307 1 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   
857-307 2 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   
857-307 3 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   
857-307 4 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   
857-307 5 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   
857-307 6 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   
857-307 7 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   
857-307 8 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   
857-307 9 Brookline MA BKLIMAMADS1  9102 VERIZON NEW ENGLAND INC. 128   2006-04-03   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.