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: 213 [Rate centres in NPA 213] [Dial plan for NPA 213]

NXX: 731

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
213-731 A Montebello CA LSANCARCD3S  649C ONVOY, LLC - CA 730      
213-731 0 Montebello CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-03-31   
213-731 1 Montebello CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-02-07   
213-731 2 Montebello CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-02-07   
213-731 3 Montebello CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-02-28   
213-731 4 Montebello CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-02-28   
213-731 5 Montebello CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-02-28   
213-731 6 Montebello CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-02-28   
213-731 7 Montebello CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-02-28   
213-731 8 Montebello CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-03-31   
213-731 9 Montebello CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-03-31   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.