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.

Houston Suburban, TX

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
281-986 6 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-986 7 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
281-986 8 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-986 9 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
281-987 A HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-987 0 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-987 1 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-987 2 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-987 3 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-987 4 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
281-987 5 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
281-987 6 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-987 7 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-987 8 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-987 9 HSTNTXADRP0  9533 SOUTHWESTERN BELL 560      
281-988 A HSTNTXALDS0  9533 SOUTHWESTERN BELL 560      
281-991 A HSTNTXEERS0  9533 SOUTHWESTERN BELL 560      
281-997 A HSTNTXPEDS1  9533 SOUTHWESTERN BELL 560      
281-998 A HSTNTXEERS0  9533 SOUTHWESTERN BELL 560      
281-999 A HSTNTXAIDS0  9533 SOUTHWESTERN BELL 560      
346-203 A   829J PAETEC ITEL, LLC 560   2025-01-23   
346-203 0 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-203 1 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-203 2 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-203 3 HSTATX757MD  7982 CAPROCK TELECOMMUNICATIONS CORP. - TX 560      
346-203 4 HSTATX757MD  7982 CAPROCK TELECOMMUNICATIONS CORP. - TX 560      
346-203 5 HSTATX757MD  7982 CAPROCK TELECOMMUNICATIONS CORP. - TX 560      
346-203 6 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-203 7 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-203 8 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
346-203 9 HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS, LLC 560      
346-207 A HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
346-207 0 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-207 1 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-207 2 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-207 3 HSTNTX01DS5  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-207 4 HSTNTX01DS5  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-207 5 HSTNTXBUDS0  9533 SOUTHWESTERN BELL 560      
346-207 6 HSTNTX01DS5  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-207 7 HSTNTX01X7X  516C AT&T CORP. 560      
346-207 8 HSTNTX01X7X  516C AT&T CORP. 560      
346-207 9 HSTNTX01DS5  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-219 A HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-219 0 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-219 1 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-219 2 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-219 3 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-219 4 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-219 5 HSTNTX01X7X  516C AT&T CORP. 560      
346-219 6 HSTNTX01X7X  516C AT&T CORP. 560      
346-219 7 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-219 8 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-219 9 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-229 A HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
346-229 0 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-229 1 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-229 2 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
346-229 3 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
346-229 4 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-229 5 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-229 6 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
346-229 7 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-229 8 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-229 9 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-252 A HSTNTX01DS5  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-252 0 HSTZTX16DS0  763H IP GLOBAL NETWORKS - TX 560      
346-252 1   515J IP HORIZON LLC 560      
346-252 2 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-252 3 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-252 4 HSTATX757MD  7982 CAPROCK TELECOMMUNICATIONS CORP. - TX 560      
346-252 5 HSTNTX01DS5  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-252 6 HSTNTX01DS5  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-252 7 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-252 8 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-252 9 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-269 A HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 0 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 1 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 2 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 3 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 4 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 5 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 6 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 7 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 8 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-269 9 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-275 A HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-275 0 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-275 1 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-275 2 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-275 3 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-275 4 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-275 5 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-275 6 HSTNTX01MMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-275 7 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-275 8 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-275 9 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-291 A HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-291 0 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-291 1 HSTNTXYADS5  903C ONVOY, LLC - TX 560      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.