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: MOBLALAZ14Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
251-283 A Mobile AL 197D VONAGE AMERICA LLC 480      
251-283 0 Mobile AL 197D VONAGE AMERICA LLC 480   2018-05-04   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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