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.

NPA: 973 [Rate centres in NPA 973] [Dial plan for NPA 973]

NXX: 899

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
973-899 A Millburn NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2025-10-25   
973-899 0 Millburn NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2025-10-25   
973-899 1 Millburn NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2026-01-04   
973-899 2 Millburn NJ NWRKNJ0248Z  118F BANDWIDTH.COM CLEC, LLC - NJ 224   2026-06-06   
973-899 3 Millburn NJ   637C ONVOY, LLC - NJ 224   2026-10-03   
973-899 4 Millburn NJ   637C ONVOY, LLC - NJ 224   2026-10-03   
973-899 6 Millburn NJ   118F BANDWIDTH.COM CLEC, LLC - NJ 224   2026-09-27   
973-899 7 Millburn NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2026-06-14   
973-899 8 Millburn NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2026-02-20   
973-899 9 Millburn NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2026-04-04   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.