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: HSTNTXYADS5

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-347 3 Houston TX 903C ONVOY, LLC - TX 560   2022-07-02   
713-347 4 Houston TX 903C ONVOY, LLC - TX 560   2022-07-02   
713-347 5 Houston TX 903C ONVOY, LLC - TX 560   2022-07-02   
713-347 6 Houston TX 903C ONVOY, LLC - TX 560   2022-07-02   
713-347 7 Houston TX 903C ONVOY, LLC - TX 560   2022-07-02   
713-347 8 Houston TX 903C ONVOY, LLC - TX 560   2022-07-02   
713-347 9 Houston TX 903C ONVOY, LLC - TX 560   2022-07-02   
713-352 2 Apollo TX 903C ONVOY, LLC - TX 560   2021-01-19   
713-352 6 Apollo TX 903C ONVOY, LLC - TX 560   2013-09-30   
713-357 6 Houston TX 903C ONVOY, LLC - TX 560   2005-03-04   
713-359 9 Houston TX 903C ONVOY, LLC - TX 560   2009-10-07   
713-360 0 Houston TX 903C ONVOY, LLC - TX 560   2012-03-24   
713-360 1 Houston TX 903C ONVOY, LLC - TX 560   2011-11-25   
713-360 2 Houston TX 903C ONVOY, LLC - TX 560   2011-11-25   
713-364 0 Houston TX 903C ONVOY, LLC - TX 560   2012-08-16   
713-364 1 Houston TX 903C ONVOY, LLC - TX 560   2007-02-12   
713-364 7 Houston TX 903C ONVOY, LLC - TX 560   2007-02-12   
713-366 4 Houston TX 903C ONVOY, LLC - TX 560   2020-11-30   
713-370 A Houston TX 903C ONVOY, LLC - TX 560   2025-01-10   
713-370 0 Houston TX 903C ONVOY, LLC - TX 560   2008-10-25   
713-370 1 Houston TX 903C ONVOY, LLC - TX 560   2008-10-25   
713-370 2 Houston TX 903C ONVOY, LLC - TX 560   2025-01-06   
713-370 3 Houston TX 903C ONVOY, LLC - TX 560   2008-10-25   
713-370 4 Houston TX 903C ONVOY, LLC - TX 560   2025-01-06   
713-370 5 Houston TX 903C ONVOY, LLC - TX 560   2025-01-06   
713-370 6 Houston TX 903C ONVOY, LLC - TX 560   2025-01-06   
713-370 7 Houston TX 903C ONVOY, LLC - TX 560   2008-10-25   
713-370 8 Houston TX 903C ONVOY, LLC - TX 560   2025-01-06   
713-370 9 Houston TX 903C ONVOY, LLC - TX 560   2025-01-06   
713-373 5 Houston TX 903C ONVOY, LLC - TX 560   2014-09-02   
713-379 A Apollo TX 903C ONVOY, LLC - TX 560      
713-379 0 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-379 1 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-379 2 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-379 3 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-379 4 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-379 5 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-379 6 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-379 7 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-379 8 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-379 9 Apollo TX 903C ONVOY, LLC - TX 560   2022-07-04   
713-383 6 Houston TX 903C ONVOY, LLC - TX 560   2021-08-05   
713-386 5 Houston TX 903C ONVOY, LLC - TX 560   2009-10-07   
713-389 4 Spring TX 903C ONVOY, LLC - TX 560   2012-11-01   
713-389 6 Spring TX 903C ONVOY, LLC - TX 560   2012-11-01   
713-389 8 Spring TX 903C ONVOY, LLC - TX 560   2008-10-18   
713-405 2 Houston TX 903C ONVOY, LLC - TX 560   2021-08-05   
713-405 3 Houston TX 903C ONVOY, LLC - TX 560   2021-08-05   
713-405 7 Houston TX 903C ONVOY, LLC - TX 560   2021-08-05   
713-422 2 Houston TX 903C ONVOY, LLC - TX 560   2009-11-24   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 >>

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.