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: 374

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-374 A Marlboro MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
774-374 0 Marlboro MA   515J IP HORIZON LLC 128   2019-04-26   
774-374 1 Marlboro MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2019-06-19   
774-374 2 Marlboro MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2018-09-23   
774-374 3 Marlboro MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2020-03-18   
774-374 4 Marlboro MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2024-10-09   
774-374 5 Marlboro MA   829J PAETEC ITEL, LLC 128   2019-11-25   
774-374 6 Marlboro MA   829J PAETEC ITEL, LLC 128   2019-11-25   
774-374 7 Marlboro MA CMBRMABEXBX  732J NUSO, LLC 128   2024-07-09   
774-374 8 Marlboro MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-07-01   
774-374 9 Marlboro MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-07-01   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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