Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 424 [Rate centres in NPA 424] [Dial plan for NPA 424]

NXX: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-550 A Beverly Hills CA   649C ONVOY, LLC - CA 730   2025-05-04   
424-550 0 Beverly Hills CA   649C ONVOY, LLC - CA 730   2025-05-04   
424-550 1 Beverly Hills CA   649C ONVOY, LLC - CA 730   2025-09-27   
424-550 2 Beverly Hills CA   649C ONVOY, LLC - CA 730   2025-09-27   
424-550 3 Beverly Hills CA   649C ONVOY, LLC - CA 730   2026-04-04   
424-550 4 Beverly Hills CA   321J HD CARRIER LLC 730   2026-05-15   
424-550 5 Beverly Hills CA   073H TELNYX LLC 730   2025-06-22   
424-550 6 Beverly Hills CA   6529 T-MOBILE USA, INC. 730   2026-05-15   
424-550 7 Beverly Hills CA   649C ONVOY, LLC - CA 730   2026-06-14   
424-550 8 Beverly Hills CA   649C ONVOY, LLC - CA 730   2025-10-26   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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