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.

Brookline, MA

<< 1 2 3 4 5 6 7 8 9 10 11 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
857-396 7 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2023-09-01   
857-396 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-09-29   
857-396 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-09-29   
857-405 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-405 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-17   
857-405 1 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-02-10   
857-405 2 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-02-10   
857-405 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-02-10   
857-405 4 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-07-08   
857-405 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-07-08   
857-405 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-17   
857-405 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-17   
857-405 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2023-01-09   
857-405 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2023-01-09   
857-421 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-01   
857-421 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-20   
857-421 1 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-20   
857-421 2 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-20   
857-421 3 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-20   
857-421 4 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-20   
857-421 5 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-20   
857-421 6 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2025-09-19   
857-421 7 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-01   
857-421 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-01   
857-421 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-09-01   
857-423 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-423 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2020-08-01   
857-423 1   829J PAETEC ITEL, LLC 128   2020-02-28   
857-423 2 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-06-21   
857-423 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-06-21   
857-423 4 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2020-05-02   
857-423 5 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2023-09-01   
857-423 6 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2020-05-02   
857-423 7 SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2020-04-13   
857-423 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2019-12-12   
857-423 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2019-10-27   
857-426 A NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-12-28   
857-426 0 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2025-09-19   
857-426 1 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2025-11-13   
857-426 2   5562 METROPCS, INC. 128   2024-12-30   
857-426 3   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2025-11-13   
857-426 4   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2025-11-13   
857-426 5   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2025-11-13   
857-426 6   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2025-12-14   
857-426 7 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2025-12-14   
857-426 8 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2025-12-14   
857-426 9 NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-12-28   
857-432 A   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2026-01-19   
857-432 5   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2026-01-19   
857-432 6   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2026-01-19   

<< 1 2 3 4 5 6 7 8 9 10 11 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.