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.

OCN: 612K CSC VOICE, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
214-305 4 Prosper TX   552   2014-03-29   
214-307 A McKinney TX DLLSTXRIXYY  552      
214-307 3 McKinney TX   552   2014-03-29   
214-308 A Frisco TX DLLSTXRIXYY  552      
214-308 3 Frisco TX   552   2014-03-29   
214-308 4 Frisco TX   552   2014-03-29   
214-407 6 Frisco EACS TX   552   2007-06-12   
214-506 A Seagoville TX DLLSTXRIXYY  552      
214-506 4 Seagoville TX   552   2007-05-11   
214-548 6 McKinney TX   552   2007-06-12   
214-592 4 McKinney TX   552   2003-12-30   
214-772 6 Dallas TX   552   2007-05-04   
214-974 1 Seagoville TX   552   2014-02-22   
220-229 A Chesterhill OH WOTNOH88X4Y  324      
220-229 5 Chesterhill OH   324   2022-08-29   
220-356 6 Byesville OH   324   2024-04-04   
220-529 8 Old Washington OH   324   2024-03-29   
234-353 A Paris OH NWPHOHXAMMD  325      
234-353 5 Paris OH   325   2022-06-27   
234-359 0 Aurora OH   320   2024-04-07   
234-412 A North Jackson OH YNTWOH02X9X  322      
234-412 5 North Jackson OH   322   2024-05-12   
234-416 A Hiram OH NWPHOHXAMMD  325      
234-416 1 Hiram OH   325   2024-05-13   
234-934 9 Garrettsville OH   325   2024-04-07   
252-200 4 Rocky Mount NC   951   2006-12-04   
252-210 2 Rocky Mount NC   951   2008-01-07   
252-210 3 Rocky Mount NC   951   2008-01-07   
252-210 9 Rocky Mount NC   951   2010-05-20   
252-220 6 Nashville NC   951   2014-02-08   
252-227 4 Greenville NC   951   2006-12-04   
252-231 0 Rocky Mount NC   951   2014-02-08   
252-231 1 Rocky Mount NC   951   2014-02-08   
252-231 8 Rocky Mount NC   951   2014-02-08   
252-250 A Pinetops NC RCMTNCXAX6Z  951      
252-250 5 Pinetops NC   951   2018-07-08   
252-251 9 Pinetops NC   951   2018-06-04   
252-253 1 Grifton NC   951   2014-02-08   
252-284 A Robersonville NC RCMTNCXAX6Z  951      
252-284 3 Robersonville NC   951   2014-03-15   
252-288 4 New Bern NC   951   2007-01-08   
252-288 5 New Bern NC   951   2008-03-26   
252-288 6 New Bern NC   951   2009-03-25   
252-304 A Ayden NC RCMTNCXAX6Z  951      
252-304 2 Ayden NC   951   2014-02-08   
252-316 8 Rocky Mount NC   951   2014-02-08   
252-318 A Ayden NC RCMTNCXAX6Z  951      
252-318 0 Ayden NC   951      
252-364 1 Greenville NC   951   2007-09-28   
252-364 2 Greenville NC   951   2007-09-28   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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