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: 587

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-587 A Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 0 Dorchester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-587 1 Dorchester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-587 2 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 3 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 4 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 5 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 6 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 7 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 8 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 9 Dorchester MA CMBRMABEQMD  321J HD CARRIER LLC 128      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.