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: HSTNTX01X7X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
346-312 A Houston Suburban TX 516C AT&T CORP. 560      
346-312 5 Houston Suburban TX 516C AT&T CORP. 560   2015-07-24   
346-312 6 Houston Suburban TX 516C AT&T CORP. 560   2015-07-24   
346-352 A Houston TX 516C AT&T CORP. 560      
346-352 0 Houston TX 516C AT&T CORP. 560   2016-06-13   
346-410 3 Houston Suburban TX 516C AT&T CORP. 560   2016-07-27   
346-410 4 Houston Suburban TX 516C AT&T CORP. 560   2016-07-27   
346-410 7 Houston Suburban TX 516C AT&T CORP. 560   2016-07-05   
346-444 5 Houston TX 516C AT&T CORP. 560   2014-08-20   
346-444 6 Houston TX 516C AT&T CORP. 560   2014-08-20   
346-701 0 Houston TX 516C AT&T CORP. 560   2015-06-13   
346-701 1 Houston TX 516C AT&T CORP. 560   2015-06-13   
346-760 A Barker TX 516C AT&T CORP. 560      
346-760 5 Barker TX 516C AT&T CORP. 560   2016-08-13   
346-808 3 Tomball TX 516C AT&T CORP. 560   2015-08-31   
346-843 A Richmond-Rosenberg TX 516C AT&T CORP. 560      
346-843 7 Richmond-Rosenberg TX 516C AT&T CORP. 560   2016-08-13   
346-888 5 Houston Suburban TX 516C AT&T CORP. 560   2014-08-13   
346-888 6 Houston Suburban TX 516C AT&T CORP. 560   2014-11-11   
346-917 2 Channelview TX 516C AT&T CORP. 560   2016-08-26   
346-954 A Deer Park TX 516C AT&T CORP. 560      
346-954 5 Deer Park TX 516C AT&T CORP. 560   2016-07-18   
346-978 A Langham Creek TX 516C AT&T CORP. 560      
346-978 4 Langham Creek TX 516C AT&T CORP. 560   2016-09-12   
346-978 5 Langham Creek TX 516C AT&T CORP. 560   2015-06-04   
346-980 5 Houston TX 516C AT&T CORP. 560   2015-05-02   
346-980 6 Houston TX 516C AT&T CORP. 560   2015-05-02   
346-980 7 Houston TX 516C AT&T CORP. 560   2015-05-02   
409-359 3 Texas City-La Marque TX 516C AT&T CORP. 560   2011-02-05   
409-443 5 Galveston TX 516C AT&T CORP. 560   2006-01-02   
409-526 0 Galveston TX 516C AT&T CORP. 560   2015-08-24   
409-684 5 Port Bolivar TX 516C AT&T CORP. 560   2012-01-25   
713-393 7 Houston TX 516C AT&T CORP. 560   2009-12-29   
713-474 5 Houston Suburban TX 516C AT&T CORP. 560   2011-06-17   
713-485 0 Houston TX 516C AT&T CORP. 560   2009-11-13   
713-485 4 Houston TX 516C AT&T CORP. 560   2009-04-24   
713-485 5 Houston TX 516C AT&T CORP. 560   2009-04-30   
713-485 6 Houston TX 516C AT&T CORP. 560   2009-04-30   
713-491 3 Houston TX 516C AT&T CORP. 560   2016-09-12   
713-497 5 Houston TX 516C AT&T CORP. 560   2013-07-29   
713-505 A Houston TX 516C AT&T CORP. 560      
713-505 1 Houston TX 516C AT&T CORP. 560      
713-586 0 Houston TX 516C AT&T CORP. 560   2016-09-12   
713-587 0 Houston TX 516C AT&T CORP. 560   2016-09-12   
713-926 0 Houston TX 516C AT&T CORP. 560   2016-09-12   
713-957 9 Houston TX 516C AT&T CORP. 560   2016-09-12   
713-993 6 Houston TX 516C AT&T CORP. 560   2009-08-23   
832-242 6 Houston TX 516C AT&T CORP. 560   2016-10-04   
832-242 7 Houston TX 516C AT&T CORP. 560   2016-10-04   
832-269 A Houston TX 516C AT&T CORP. 560      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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