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: 544

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-544 A El Segundo CA LSANCAJWIMD  965H FRACTEL, LLC 730      
424-544 0 El Segundo CA   073H TELNYX LLC 730   2023-03-18   
424-544 1 El Segundo CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2022-05-17   
424-544 2 El Segundo CA   649C ONVOY, LLC - CA 730   2022-09-30   
424-544 3 El Segundo CA   649C ONVOY, LLC - CA 730   2022-09-30   
424-544 4 El Segundo CA   965H FRACTEL, LLC 730   2022-03-25   
424-544 5 El Segundo CA   649C ONVOY, LLC - CA 730   2022-09-30   
424-544 6 El Segundo CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2022-03-31   
424-544 7 El Segundo CA   624H ONVOY SPECTRUM, LLC 730   2022-08-13   
424-544 8 El Segundo CA   624H ONVOY SPECTRUM, LLC 730   2022-08-13   
424-544 9 El Segundo CA   649C ONVOY, LLC - CA 730   2022-11-05   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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