Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 347

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-347 A Boston MA BSTPMALLVMD  181J ADVANCED TELECOM SOLUTIONS, LLC 128      
857-347 0 Boston MA BSTPMALLVMD  181J ADVANCED TELECOM SOLUTIONS, LLC 128   2018-08-27   
857-347 1 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2018-10-07   
857-347 2 Boston MA CMBRMABE5MD  551G NUSO, LLC 128   2018-10-14   
857-347 3 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2018-08-28   
857-347 4 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2018-08-28   
857-347 5 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2018-08-28   
857-347 6 Boston MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-08-28   
857-347 7 Boston MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-08-28   
857-347 8 Boston MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-08-28   
857-347 9 Boston MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2018-08-28   

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

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