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: 972 [Rate centres in NPA 972] [Dial plan for NPA 972]

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-545 A Irving EMS TX DLLSTX97DSS  6630 SPOK, INC. 552      
972-546 A Dallas TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 0 Dallas TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 1 Dallas TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 2 Dallas TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 3 Dallas TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 4 Dallas TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 5 Dallas TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 6 Dallas TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 7 Dallas TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2009-10-05   
972-546 8 Dallas TX   6529 T-MOBILE USA, INC. 552   2025-06-11   
972-546 9 Dallas TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-547 A McKinney TX MCKNTXLIDS0  9533 SOUTHWESTERN BELL 552      
972-548 A McKinney TX MCKNTXLIDS0  9533 SOUTHWESTERN BELL 552      
972-549 A McKinney EMS TX FRSCTXBJPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 552      
972-550 A Irving TX IRNGTXXGDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-551 A Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-551 0 Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-551 1 Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-551 2 Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-551 3 Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-551 4 Terrell TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2015-12-10   
972-551 5 Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-551 6 Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-551 7 Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-551 8 Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-551 9 Terrell TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2012-12-21   
972-552 A Forney TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-552 0 Forney TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2012-02-04   
972-552 1 Forney TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-552 2 Forney TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-552 3 Forney TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-552 4 Forney TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2012-08-28   
972-552 5 Forney TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-552 6 Forney TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2009-07-03   
972-552 7 Forney TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2008-08-02   
972-552 8 Forney TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2004-04-04   
972-552 9 Forney TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-553 A Plano TX FRSCTXBJPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 552      
972-554 A Irving TX IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-556 A Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 0 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 1 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 2 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 3 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 4 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 5 Dallas TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-556 6 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 7 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 8 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 9 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-557 A Dallas TX DLLSTXRYDS0  9533 SOUTHWESTERN BELL 552      
972-558 A Grand Prairie EMS TX DLLSTXGPRPA  9533 SOUTHWESTERN BELL 552      
972-559 A Dallas TX DLLSTXFLDS0  9533 SOUTHWESTERN BELL 552      
972-559 0 Dallas TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-559 1 Dallas TX DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2005-11-06   
972-559 2 Dallas TX DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2005-11-06   
972-559 3 Dallas TX DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2005-11-06   
972-559 4 Dallas TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-04-28   
972-559 5 Dallas TX DLLSTXFLDS0  9533 SOUTHWESTERN BELL 552      
972-559 6 Dallas TX DLLSTXFLDS0  9533 SOUTHWESTERN BELL 552      
972-559 7 Dallas TX DLLSTXFLDS0  9533 SOUTHWESTERN BELL 552      
972-559 8 Dallas TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2009-10-05   
972-559 9 Dallas TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-560 A Dallas TX DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-561 A Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-561 0 Grand Prairie TX DLLSTXJFDMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2006-03-12   
972-561 1 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-561 2 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-561 3 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-561 4 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-561 5 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-561 6 Grand Prairie TX DLLSTXJFDMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2020-12-07   
972-561 7 Grand Prairie TX DLLSTXJFDMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2020-12-07   
972-561 8 Grand Prairie TX DLLSTXJFDMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2020-12-07   
972-561 9 Grand Prairie TX DLLSTXJFDMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2020-12-07   
972-562 A McKinney EMS TX MCKNTXLIDS0  9533 SOUTHWESTERN BELL 552      
972-563 A Terrell TX TRRLTXJODS0  9533 SOUTHWESTERN BELL 552      
972-564 A Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-564 0 Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-564 1 Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-564 2 Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-564 3 Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-564 4 Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-564 5 Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-564 6 Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-564 7 Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-564 8 Forney EMS TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2011-06-24   
972-564 9 Forney EMS TX FRNYTXHIRS0  9533 SOUTHWESTERN BELL 552      
972-565 A Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
972-565 0 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   
972-565 1 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   
972-565 2 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   
972-565 3 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   
972-565 4 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   
972-565 5 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   
972-565 6 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   
972-565 7 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   
972-565 8 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   
972-565 9 Frisco TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2022-08-21   

<< 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 >>

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.