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.

Dallas, 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 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 54 55 56 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
469-522 5 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
469-522 6 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
469-522 7 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
469-522 8 DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
469-522 9 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2009-02-11   
469-533 A DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
469-547 A DLLSTXTLDS8  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-547 0 DLLSTXTLDS8  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-547 1   793K TWC IP ENABLED SERVICES, LLC 552      
469-547 2   793K TWC IP ENABLED SERVICES, LLC 552      
469-547 3 DLLSTXTLDS8  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-547 4 DLLSTXTLDS8  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-547 5 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2010-07-12   
469-547 6 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2010-07-12   
469-547 7 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-04-28   
469-547 8 DLLSTXTLDS8  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-547 9 DLLSTXTLDS8  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-554 A DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
469-554 0 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-04-28   
469-554 1 DLLTTXID1MD  5562 METROPCS, INC. 552   2009-06-16   
469-554 2 DLLTTXID1MD  5562 METROPCS, INC. 552   2009-06-16   
469-554 3 DLLTTXID1MD  5562 METROPCS, INC. 552   2009-06-16   
469-554 4 DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552   2005-06-17   
469-554 5 DLLTTXID1MD  5562 METROPCS, INC. 552   2009-06-20   
469-554 6 DLLTTXID1MD  5562 METROPCS, INC. 552   2009-06-20   
469-554 7 DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2010-06-15   
469-554 8 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-04-28   
469-554 9 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-04-28   
469-567 A DLLSTXDNDS0  9533 SOUTHWESTERN BELL 552      
469-567 0 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2014-10-18   
469-567 1 DLLSTXDNDS0  9533 SOUTHWESTERN BELL 552      
469-567 2 DLLSTXDNDS0  9533 SOUTHWESTERN BELL 552      
469-567 3   793K TWC IP ENABLED SERVICES, LLC 552   2011-02-28   
469-567 4 DLLSTXDNDS0  9533 SOUTHWESTERN BELL 552      
469-567 5 DLLSTXDNDS0  9533 SOUTHWESTERN BELL 552      
469-567 6 DLLSTXDNDS0  9533 SOUTHWESTERN BELL 552      
469-567 7 DLLTTXID1MD  5562 METROPCS, INC. 552   2017-10-12   
469-567 8 DLLTTXID1MD  5562 METROPCS, INC. 552   2018-10-15   
469-567 9 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2009-02-11   
469-572 A DLLSTX97XAX  0051 SHELCOMM 552      
469-577 A DLLSTX97X1X  073H TELNYX LLC 552      
469-577 0 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2017-11-04   
469-577 1 DLLSTX97X1X  073H TELNYX LLC 552   2017-01-23   
469-577 2 DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2017-09-27   
469-577 3 DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2017-09-27   
469-577 4   793K TWC IP ENABLED SERVICES, LLC 552   2017-11-03   
469-577 5 DLLTTXID1MD  5562 METROPCS, INC. 552   2017-04-07   
469-577 6   793K TWC IP ENABLED SERVICES, LLC 552   2017-11-03   
469-577 7 DLLTTXID1MD  5562 METROPCS, INC. 552   2017-04-07   
469-577 8 DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552   2017-12-14   
469-577 9 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2018-04-07   
469-587 A DLLBTXPVDS0  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-587 0 DLLBTXPVDS0  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-587 1 DLLBTXPVDS0  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-587 2 DLLBTXPVDS0  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-587 3 DLLBTXPVDS0  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-587 4 DLLTTXID1MD  5562 METROPCS, INC. 552   2011-03-24   
469-587 5 DLLBTXPVDS0  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
469-587 6 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2010-02-03   
469-587 7 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2008-07-27   
469-587 8 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2008-07-27   
469-587 9 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-04-28   
469-593 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
469-603 A DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
469-603 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-603 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-603 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-603 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-603 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-603 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-603 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-603 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-603 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-603 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2013-05-03   
469-607 A DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      
469-607 0 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-607 1 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-607 2 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-607 3 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-607 4 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-607 5 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-607 6 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-607 7 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-607 8 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-607 9 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-07-19   
469-608 A DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
469-608 0 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2014-04-06   
469-608 1 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2014-04-06   
469-608 2 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2013-09-23   
469-608 3 DLLSTXRIXYY  318C CEBRIDGE TELECOM TX , L.P. - TX 552   2014-02-22   
469-608 4 FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2018-05-23   
469-608 5   793K TWC IP ENABLED SERVICES, LLC 552   2018-08-03   
469-608 6 DLLSTXTLDS7  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2013-11-25   
469-608 7 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2013-11-08   
469-608 8 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2013-11-08   
469-608 9 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2014-04-06   
469-619 A DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
469-619 0 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
469-619 1 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2005-02-12   
469-619 2 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2006-01-28   

<< 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 54 55 56 >>

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.