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.

Switch: MTRYCA012MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
831-244 A Big Sur CA 981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-264 A Monterey CA 981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-275 A Monterey CA 981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-308 A Carmel Valley CA 981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-309 A Carmel CA 981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-387 A King City CA 981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-613 A Greenfield (Monterey) CA 981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-856 A Greenfield (Monterey) CA 981E BANDWIDTH.COM CLEC, LLC - CA 736      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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