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.

Dorchester, MA

<< 1 2 3

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
857-375 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-375 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-375 9 SOVLMAAB6MD  939H COMMIO, LLC 128      
857-385 A CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-385 0 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-385 1 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-385 2 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-385 3 CMBRMAORDS0  7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 128      
857-385 4   321J HD CARRIER LLC 128      
857-385 5   321J HD CARRIER LLC 128      
857-385 6 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-385 7 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-385 8 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-385 9 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-418 A CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128      
857-418 0   892D ONVOY, LLC - MA 128      
857-418 1   892D ONVOY, LLC - MA 128      
857-418 2 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-418 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-418 5   892D ONVOY, LLC - MA 128      
857-418 6 CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128      
857-418 8   892D ONVOY, LLC - MA 128      
857-418 9   892D ONVOY, LLC - MA 128      
857-567 A BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-567 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-567 1 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-567 2 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-567 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-567 4 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-567 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-567 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-567 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-567 9 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-587 A CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-587 1 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-587 2 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 3 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 4 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 5 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 6 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 7 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 8 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-587 9 CMBRMABEQMD  321J HD CARRIER LLC 128      
857-663 A   892D ONVOY, LLC - MA 128      
857-663 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-663 1   515J IP HORIZON LLC 128      
857-663 2 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-663 3 BSTPMALLOMD  073H TELNYX LLC 128      
857-663 4   145J TERRA NOVA TELECOM INC. 128      
857-663 5   145J TERRA NOVA TELECOM INC. 128      
857-663 6 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-663 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-663 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-663 9 SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
857-688 A SOVLMAABAMD  965H FRACTEL, LLC 128      
857-688 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-688 1 CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-688 2 CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-688 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-688 4 SOVLMAABCMD  516J TON80 COMMUNICATIONS, LLC 128      
857-688 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-688 6 CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-688 7 CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-688 8 SOVLMAABAMD  965H FRACTEL, LLC 128      
857-688 9 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-847 A CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-847 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-847 1 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-847 2 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-847 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-847 4 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-847 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-847 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-847 7 CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-847 8 CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-847 9 BSTPMALLDS3  892D ONVOY, LLC - MA 128      

<< 1 2 3

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.