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: 916 [Rate centres in NPA 916] [Dial plan for NPA 916]

NXX: 314

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
916-314 A Michigan Bar CA SCRMCAWC2KD  7379 MATRIX TELECOM, LLC. S/I/I TNCI - CA 726      
916-314 0 Michigan Bar CA   981E BANDWIDTH.COM CLEC, LLC - CA 726      
916-314 1 Michigan Bar CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 726      
916-314 2 Michigan Bar CA   649C ONVOY, LLC - CA 726      
916-314 3 Michigan Bar CA   981E BANDWIDTH.COM CLEC, LLC - CA 726      
916-314 4 Michigan Bar CA   649C ONVOY, LLC - CA 726      
916-314 5 Michigan Bar CA   981E BANDWIDTH.COM CLEC, LLC - CA 726   2017-08-12   
916-314 6 Michigan Bar CA   649C ONVOY, LLC - CA 726      
916-314 7 Michigan Bar CA   649C ONVOY, LLC - CA 726   2018-09-22   
916-314 8 Michigan Bar CA   649C ONVOY, LLC - CA 726      
916-314 9 Michigan Bar CA   649C ONVOY, LLC - CA 726      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.