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: 850 [Rate centres in NPA 850] [Dial plan for NPA 850]

NXX: 923

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
850-923 A Glendale FL CRVWFLXA9MD  937C ONVOY, LLC - FL 44814      
850-923 0 Glendale FL CRVWFLXAX0X  566J RADIANTIQ LLC 44814   2021-02-22   
850-923 2 Glendale FL   506J TWILIO INTERNATIONAL INC 44814   2021-02-19   
850-923 8 Glendale FL CRVWFLXA9MD  937C ONVOY, LLC - FL 44814   2020-11-09   
850-923 9 Glendale FL CRVWFLXA9MD  937C ONVOY, LLC - FL 44814   2020-11-09   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.