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]

Block: A

<< 1 2 3 4 5 6 7

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-763 A Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-766 A South Boston MA SOVLMAABAMD  965H FRACTEL, LLC 128      
857-767 A Boston MA SOVLMAABCMD  516J TON80 COMMUNICATIONS, LLC 128      
857-770 A Boston MA CMBRMABEEMD  116E INTRADO COMMUNICATIONS, LLC 128      
857-772 A Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-773 A Jamaica Plain MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-776 A Chelsea MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-777 A Cambridge MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
857-788 A Boston MA CMBRMABEXFX  622J SKYE TELECOM LLC DBA SKYETEL 128      
857-799 A Cambridge MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-800 A Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-810 A Boston MA CMBRMABEX6X  566J RADIANTIQ LLC 128      
857-816 A Winthrop MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-829 A Cambridge MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-02-09   
857-832 A Brighton MA SOVLMAABCMD  516J TON80 COMMUNICATIONS, LLC 128      
857-837 A Charlestown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-847 A Dorchester MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-855 A Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-856 A Cambridge MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-858 A Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-867 A Brookline MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-869 A Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-877 A Brighton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-880 A Boston MA SOVLMAAB5MD  732H BARR TELL USA, INC. - MA 128      
857-887 A Jamaica Plain MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-888 A Everett MA   5562 METROPCS, INC. 128      
857-891 A Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-895 A Boston MA CMBRMABE8MD  156J RCLEC, INC. 128      
857-919 A Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-920 A Cambridge MA XXXXXXXXXXX  9102 VERIZON NEW ENGLAND INC. 128      
857-928 A Cambridge MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-930 A Boston MA CMBRMABE8MD  156J RCLEC, INC. 128      
857-931 A Boston MA CMBRMABE02T  9102 VERIZON NEW ENGLAND INC. 128      
857-939 A Quincy MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-957 A Boston MA CMBRMABEZMD  756G WIDE VOICE, LLC - MA 128      
857-961 A Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-971 A Charlestown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-972 A Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-990 A Boston MA BSTPMALLMMD  139F WORLDCALL INTERCONNECT INC. 128      
857-991 A Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
857-995 A Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-996 A Boston MA CMBRMAORDS0  7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 128      
857-997 A Somerville MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-998 A Cambridge MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-999 A Cambridge MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      

<< 1 2 3 4 5 6 7

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.