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.

NPA: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

<< 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 57 58 59 60 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-541 A Austin TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-541 0 Austin TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2008-09-20   
512-541 1 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2008-09-08   
512-541 2 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2008-09-08   
512-541 3 Austin TX AUSTTXGRDS7  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2008-07-14   
512-541 4 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2008-09-08   
512-541 5 Austin TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2008-06-01   
512-541 6 Austin TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2008-07-05   
512-541 7 Austin TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2008-07-15   
512-541 8 Austin TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2008-06-20   
512-541 9 Austin TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2008-06-01   
512-542 A Austin TX AUSTTXGRDS5  9533 SOUTHWESTERN BELL 558      
512-542 0 Austin TX AUSTTXGRDS5  9533 SOUTHWESTERN BELL 558      
512-542 1 Austin TX AUSWTXGXBMD  5562 METROPCS, INC. 558   2007-08-02   
512-542 2 Austin TX AUSTTXGRDS5  9533 SOUTHWESTERN BELL 558      
512-542 3 Austin TX AUSTTXGRDS5  9533 SOUTHWESTERN BELL 558      
512-542 4 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2007-08-02   
512-542 5 Austin TX AUSTTXGRDS5  9533 SOUTHWESTERN BELL 558      
512-542 6 Austin TX AUSTTXGRDS5  9533 SOUTHWESTERN BELL 558      
512-542 7 Austin TX AUSTTXGRDS5  9533 SOUTHWESTERN BELL 558      
512-542 8 Austin TX AUSTTXGRDS5  9533 SOUTHWESTERN BELL 558      
512-542 9 Austin TX AUSTTXGRDS5  9533 SOUTHWESTERN BELL 558      
512-543 A Rockdale TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
512-543 0 Rockdale TX AUSTTXGR45Z  624H ONVOY SPECTRUM, LLC 558   2022-02-28   
512-543 1 Rockdale TX AUSTTXGRDS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2019-10-30   
512-543 2 Rockdale TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2010-11-01   
512-543 3 Rockdale TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2014-12-03   
512-543 4 Rockdale TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2016-07-29   
512-543 5 Rockdale TX AUSTTXGR25Z  516C AT&T CORP. 558   2011-06-07   
512-543 6 Rockdale TX AUSWTXGXBMD  5562 METROPCS, INC. 558   2016-11-21   
512-543 7 Rockdale TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2013-02-20   
512-543 8 Rockdale TX AUSWTXGXBMD  5562 METROPCS, INC. 558   2016-09-12   
512-543 9 Rockdale TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2014-04-25   
512-544 A Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558      
512-544 0 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-544 1 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-544 2 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-544 3 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-544 4 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-544 5 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-544 6 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-544 7 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-544 8 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-544 9 Austin TX AUSTTXUHAMD  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 558   2005-04-25   
512-545 A Bastrop TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-545 0 Bastrop TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2013-05-16   
512-545 1 Bastrop TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2013-05-16   
512-545 2 Bastrop TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2014-01-20   
512-545 3 Bastrop TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2014-01-20   
512-545 4 Bastrop TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2010-04-09   
512-545 5 Bastrop TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2014-09-04   
512-545 6 Bastrop TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2009-05-04   
512-545 7 Bastrop TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2014-01-20   
512-545 8 Bastrop TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2014-01-20   
512-545 9 Bastrop TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2013-05-16   
512-546 A Dale/Lytton Springs TX AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-546 0 Dale/Lytton Springs TX AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-546 1 Dale/Lytton Springs TX AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-546 2 Dale/Lytton Springs TX AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-546 3 Dale/Lytton Springs TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558   2014-11-28   
512-546 4 Dale/Lytton Springs TX AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-546 5 Dale/Lytton Springs TX AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-546 6 Dale/Lytton Springs TX AUSTTXGRDS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2016-03-31   
512-546 7 Dale/Lytton Springs TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558   2012-06-16   
512-546 8 Dale/Lytton Springs TX AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-546 9 Dale/Lytton Springs TX AUSTTX92X0X  139F WORLDCALL INTERCONNECT INC. 558   2008-09-12   
512-547 A Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-547 0 Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2009-03-29   
512-547 1 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2009-02-10   
512-547 2 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2009-02-10   
512-547 3 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2009-02-10   
512-547 4 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2009-02-10   
512-547 5 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2009-02-10   
512-547 6 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2009-02-10   
512-547 7 Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2009-03-29   
512-547 8 Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2009-03-29   
512-547 9 Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2008-11-22   
512-548 A Liberty Hill TX AUSXTXZR0MD  793K TWC IP ENABLED SERVICES, LLC 558   2025-01-29   
512-548 0 Liberty Hill TX AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-548 1 Liberty Hill TX AUSTTXGR46Z  158H INVOXIO INCORPORATED 558   2018-07-29   
512-548 2 Liberty Hill TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2018-09-14   
512-548 3 Liberty Hill TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2018-09-14   
512-548 4 Liberty Hill TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2018-07-05   
512-548 5 Liberty Hill TX AUSXTXZR0MD  793K TWC IP ENABLED SERVICES, LLC 558   2010-11-06   
512-548 6 Liberty Hill TX AUSXTXZR0MD  793K TWC IP ENABLED SERVICES, LLC 558   2006-12-06   
512-548 7 Liberty Hill TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2013-02-20   
512-548 8 Liberty Hill TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2016-03-28   
512-548 9 Liberty Hill TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2014-04-25   
512-549 A Bastrop EMS TX BSTRTXBSDS0  9533 SOUTHWESTERN BELL 558      
512-549 0 Bastrop EMS TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2014-07-01   
512-549 1 Bastrop EMS TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2015-01-21   
512-549 2 Bastrop EMS TX AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2011-07-23   
512-549 3 Bastrop EMS TX AUSXTXZR0MD  793K TWC IP ENABLED SERVICES, LLC 558   2010-11-06   
512-549 4 Bastrop EMS TX AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2012-02-25   
512-549 5 Bastrop EMS TX BSTRTXBSDS0  9533 SOUTHWESTERN BELL 558   2009-07-23   
512-549 6 Bastrop EMS TX AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2012-02-25   
512-549 7 Bastrop EMS TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2010-10-25   
512-549 8 Bastrop EMS TX AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2012-07-27   
512-549 9 Bastrop EMS TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2012-10-19   
512-550 A Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      

<< 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 57 58 59 60 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.