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: 330 [Rate centres in NPA 330] [Dial plan for NPA 330]

NXX: 593

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
330-593 A Kent OH AKRNOHIA5MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 325      
330-593 1 Kent OH   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 325   2016-01-10   
330-593 2 Kent OH   073H TELNYX LLC 325   2017-03-30   
330-593 3 Kent OH   508J CENTURYLINK COMMUNICATIONS, LLC 325   2014-05-30   
330-593 4 Kent OH   464C ONVOY, LLC - OH 325   2012-02-04   
330-593 5 Kent OH   793K TWC IP ENABLED SERVICES, LLC 325   2014-04-10   
330-593 6 Kent OH   4863 LEVEL 3 COMMUNICATIONS, LLC - OH 325      
330-593 7 Kent OH   7532 TELEPORT COMMUNICATIONS AMERICA, LLC - OH 325   2008-01-19   
330-593 8 Kent OH   6529 T-MOBILE USA, INC. 325   2012-03-19   
330-593 9 Kent OH   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 325   2016-03-06   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.