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.
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OCN: 612K CSC VOICE, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
928-733 3 Lake Havasu City AZ   666   2014-01-03   
928-733 4 Lake Havasu City AZ   666   2014-01-03   
928-733 5 Lake Havasu City AZ   666   2014-01-03   
928-733 6 Lake Havasu City AZ   666   2014-01-03   
928-764 5 Castle Rock AZ   666   2014-03-03   
928-770 A Mohave Valley AZ KGMNAZXCEMD  666      
928-770 0 Mohave Valley AZ   666   2018-01-29   
928-770 4 Mohave Valley AZ   666   2005-06-02   
928-862 2 Sedona AZ   666   2014-03-03   
928-862 3 Sedona AZ   666   2014-03-03   
928-862 4 Sedona AZ   666   2014-03-03   
928-923 5 Ehrenberg AZ   730   2014-03-23   
929-210 0 New York City Zone 06 NY WHPLNYGR1MD  132   2012-11-26   
929-210 8 New York City Zone 06 NY WHPLNYGR1MD  132   2012-11-26   
929-210 9 New York City Zone 06 NY WHPLNYGR1MD  132   2012-11-26   
929-222 3 New York City Zone 05 NY WHPLNYGR1MD  132   2012-10-14   
929-222 4 New York City Zone 05 NY WHPLNYGR1MD  132   2012-10-14   
929-222 5 New York City Zone 05 NY WHPLNYGR1MD  132   2013-03-07   
929-234 A New York City Zone 06 NY WHPLNYGR1MD  132      
929-234 2 New York City Zone 06 NY WHPLNYGR1MD  132   2012-08-18   
929-234 3 New York City Zone 06 NY WHPLNYGR1MD  132   2012-04-06   
929-234 5 New York City Zone 06 NY WHPLNYGR1MD  132   2012-08-18   
929-234 6 New York City Zone 06 NY WHPLNYGR1MD  132   2012-09-18   
929-243 A New York City Zone 05 NY WHPLNYGR1MD  132      
929-243 3 New York City Zone 05 NY WHPLNYGR1MD  132   2012-05-05   
929-246 5 New York City Zone 03 NY WHPLNYGR1MD  132   2015-04-21   
929-259 9 New York City Zone 03 NY WHPLNYGR1MD  132   2014-08-11   
929-263 1 New York City Zone 03 NY WHPLNYGR1MD  132   2014-04-04   
929-265 9 New York City Zone 03 NY WHPLNYGR1MD  132   2014-05-02   
929-333 9 New York City Zone 07 NY WHPLNYGR1MD  132   2012-10-29   
929-777 9 New York City Zone 04 NY WHPLNYGR1MD  132   2012-10-29   
934-222 0 Southampton NY WHPLNYGR1MD  132   2016-07-18   
934-444 0 Amityville NY WHPLNYGR1MD  132   2016-11-25   
934-451 3 Bellport NY WHPLNYGR1MD  132   2018-10-27   
934-852 1 Yaphank NY WHPLNYGR1MD  132   2016-07-23   
934-888 6 Bay Shore NY WHPLNYGR1MD  132   2017-09-05   
936-202 8 Conroe TX   560   2013-04-17   
936-205 4 Nacogdoches TX   560   2007-03-16   
936-205 5 Nacogdoches TX   560   2008-08-29   
936-205 9 Nacogdoches TX   560   2012-03-25   
936-217 1 Conroe TX   560   2014-03-14   
936-227 7 Cushing TX   560   2022-07-18   
936-228 2 Willis EMS TX   560   2007-06-24   
936-228 7 Willis EMS TX   560   2010-03-27   
936-233 A Hudson (Angelina) TX LFKNTXXABMD  560      
936-233 0 Hudson (Angelina) TX   560      
936-237 5 Huntington TX   560   2018-08-31   
936-238 2 Lufkin TX   560   2008-01-10   
936-238 3 Lufkin TX   560   2008-03-01   
936-238 4 Lufkin TX   560   2013-08-07   
936-242 6 Conroe TX   560   2010-09-18   
936-260 8 Trinity TX   560   2024-04-14   
936-279 8 Garrison TX   560   2020-01-19   
936-284 A New Waverly TX NCGDTXNCKMD  560      
936-284 2 New Waverly TX   560   2019-03-25   
936-286 8 Conroe TX   560   2019-06-21   
936-287 7 Central TX   560   2022-11-17   
936-305 A Nacogdoches TX NCGDTXNCKMD  560      
936-305 3 Nacogdoches TX   560   2014-05-25   
936-305 4 Nacogdoches TX   560   2014-05-25   
936-305 5 Nacogdoches TX   560   2014-05-25   
936-315 A Fuller Springs TX LFKNTXXABMD  560      
936-315 5 Fuller Springs TX   560   2015-12-27   
936-382 7 Dayton TX   560   2024-04-08   
936-439 4 Huntsville TX   560   2011-02-09   
936-439 5 Huntsville TX   560   2007-03-16   
936-448 7 Walden EMS TX   560   2009-02-11   
936-448 9 Walden EMS TX   560   2014-01-28   
936-449 1 Montgomery EMS TX   560   2014-02-28   
936-449 8 Montgomery EMS TX   560   2014-02-28   
936-488 6 Center TX   560   2022-03-11   
936-526 2 Diboll TX   560   2014-02-28   
936-599 1 Shepherd TX   560   2024-04-14   
936-666 5 Willis TX   560   2012-05-31   
936-679 1 San Augustine TX   560   2022-03-11   
936-701 A Willis TX NCGDTXNCKMD  560      
936-701 2 Willis TX   560   2014-04-04   
936-701 3 Willis TX   560   2014-04-04   
936-701 4 Willis TX   560   2014-04-04   
936-701 5 Willis TX   560   2014-04-04   
936-703 A Conroe TX LFKNTXXABMD  560      
936-703 3 Conroe TX   560   2013-12-30   
936-703 4 Conroe TX   560   2013-12-30   
936-703 5 Conroe TX   560   2013-12-30   
936-727 5 Navasota TX   560   2014-02-28   
936-755 6 Huntsville TX   560   2014-02-28   
936-755 8 Huntsville TX   560   2014-02-28   
936-828 2 Conroe TX   560   2008-01-10   
936-828 3 Conroe TX   560   2008-03-01   
936-877 2 Alto TX   560   2021-04-29   
936-888 1 Hudson (Angelina) TX   560   2014-02-28   
936-899 5 Lufkin TX   560   2014-02-28   
936-899 6 Lufkin TX   560   2014-02-28   
936-899 7 Lufkin TX   560   2014-02-28   
936-946 1 Reklaw TX   560   2024-03-31   
937-943 A Troy OH DYTNOH22XLZ  328      
937-943 5 Troy OH   328   2022-07-15   
940-202 6 Tioga TX   552   2009-10-16   
940-223 5 Vernon TX   548   2024-05-12   
940-301 A Gainesville TX DNTNTXXAXSX  552      

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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