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.

OCN: 321J HD CARRIER LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
730-740 6 Carbondale IL   362   2026-01-19   
730-740 7 Carbondale IL   362   2026-01-19   
730-740 8 Carbondale IL   362   2026-01-19   
730-740 9 Carbondale IL   362   2026-01-19   
732-434 0 New Brunswick NJ NWRKNJ0298Z  224   2016-05-19   
732-434 1 New Brunswick NJ NWRKNJ0298Z  224   2016-05-19   
732-434 2 New Brunswick NJ NWRKNJ0298Z  224   2016-05-19   
732-434 3 New Brunswick NJ NWRKNJ0298Z  224   2016-05-19   
732-434 4 New Brunswick NJ NWRKNJ0298Z  224   2016-05-19   
732-434 5 New Brunswick NJ NWRKNJ0298Z  224   2016-05-19   
732-434 6 New Brunswick NJ NWRKNJ0298Z  224   2016-05-19   
732-434 9 New Brunswick NJ NWRKNJ0298Z  224   2016-05-25   
732-653 2 Dunellen NJ NWRKNJ0298Z  224   2016-05-19   
732-653 4 Dunellen NJ NWRKNJ0298Z  224   2016-05-19   
732-653 6 Dunellen NJ NWRKNJ0298Z  224   2016-05-19   
732-653 8 Dunellen NJ NWRKNJ0298Z  224   2016-05-19   
732-733 8 Dunellen NJ NWRKNJ0298Z  224   2016-05-19   
732-799 6 New Brunswick NJ NWRKNJ0298Z  224   2016-05-19   
732-799 7 New Brunswick NJ NWRKNJ0298Z  224   2016-05-19   
732-944 1 New Brunswick NJ   224   2016-09-04   
734-251 6 Ann Arbor MI   340   2025-11-03   
737-254 3 Austin TX   558   2025-07-19   
737-310 A Wimberley TX AUSTTXGR61Z  558      
737-310 9 Wimberley TX AUSTTXGR61Z  558   2021-12-26   
737-399 0 Austin TX   558   2025-07-19   
737-399 1 Austin TX   558   2025-07-19   
737-787 A Austin TX AUSTTXGR54Z  558      
737-787 9 Austin TX AUSTTXGR54Z  558   2020-04-20   
743-286 A Greensboro NC   424   2025-10-05   
743-286 3 Greensboro NC   424   2025-10-05   
743-286 4 Greensboro NC   424   2025-10-05   
743-286 5 Greensboro NC   424   2025-10-05   
743-286 6 Greensboro NC   424   2025-10-05   
743-286 7 Greensboro NC   424   2025-10-05   
743-286 8 Greensboro NC   424   2025-10-05   
743-643 A Greensboro NC GNBPNCEM7MD  424      
743-643 8 Greensboro NC GNBPNCEM7MD  424   2020-07-27   
743-643 9 Greensboro NC GNBPNCEM7MD  424   2020-07-27   
747-205 7 North Hollywood CA LSANCARCY1X  730   2016-06-11   
747-205 8 North Hollywood CA LSANCARCY1X  730   2016-06-11   
747-205 9 North Hollywood CA LSANCARCY1X  730   2016-06-11   
747-265 5 Reseda CA   730   2016-08-27   
747-265 8 Reseda CA LSANCARCY1X  730   2016-08-27   
754-529 1 Coral Springs FL MIAUFLWSSMD  46017   2016-06-12   
754-529 2 Coral Springs FL   46017   2016-06-12   
754-529 6 Coral Springs FL   46017   2016-06-12   
754-707 6 Hollywood FL   46017   2016-08-27   
754-707 7 Hollywood FL MIAUFLWSSMD  46017   2016-08-27   
757-987 A Norfolk Zone 2 VA NRFLVAJYGMD  252      
757-987 8 Norfolk Zone 2 VA NRFLVAJYGMD  252   2021-11-06   

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

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