Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 774 [Rate centres in NPA 774] [Dial plan for NPA 774]

NXX: 840

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-840 A Chatham MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
774-840 0 Chatham MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
774-840 1 Chatham MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-05-24   
774-840 2 Chatham MA   515J IP HORIZON LLC 128   2016-06-26   
774-840 3 Chatham MA   073H TELNYX LLC 128   2017-05-04   
774-840 4 Chatham MA   318J COMCAST IP PHONE, LLC 128   2015-10-02   
774-840 5 Chatham MA   892D ONVOY, LLC - MA 128   2019-01-05   
774-840 6 Chatham MA   892D ONVOY, LLC - MA 128   2019-01-05   
774-840 7 Chatham MA   508J CENTURYLINK COMMUNICATIONS, LLC 128   2014-04-25   
774-840 8 Chatham MA   515J IP HORIZON LLC 128   2015-10-18   
774-840 9 Chatham MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2016-03-18   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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