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.

Switch: CMBRMABENMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
339-565 A Lincoln MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
351-352 A Georgetown MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
351-355 A Amesbury MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
351-361 A Ashby MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
351-388 A Harvard MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
351-501 A Hubbardston MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
774-466 A Boylston MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
774-533 A Bridgewater MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
774-557 A Buzzards Bay MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
774-665 A Norton MA 624H ONVOY SPECTRUM, LLC 128   2021-02-19   
774-677 A Attleboro MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
774-744 A Blackstone MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
774-747 A Assonet MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
857-298 A Cambridge MA 624H ONVOY SPECTRUM, LLC 128      
857-847 A Dorchester MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
857-867 A Brookline MA 624H ONVOY SPECTRUM, LLC 128   2021-05-17   
857-887 A Jamaica Plain MA 624H ONVOY SPECTRUM, LLC 128   2021-02-19   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.