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.

Austin, 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
512-200 A AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-200 0 AUSTTX92X0X  139F WORLDCALL INTERCONNECT INC. 558      
512-200 1 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-200 2 AUSYTXFC1MD  004F BANDWIDTH.COM CLEC, LLC - TX 558      
512-200 3 AUSYTXFC1MD  004F BANDWIDTH.COM CLEC, LLC - TX 558      
512-200 4 AUSYTXFC1MD  004F BANDWIDTH.COM CLEC, LLC - TX 558      
512-200 5 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-200 6 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-200 7 AUSYTXFC1MD  004F BANDWIDTH.COM CLEC, LLC - TX 558      
512-200 8 AUSYTXFC1MD  004F BANDWIDTH.COM CLEC, LLC - TX 558      
512-200 9 AUSYTXFC1MD  004F BANDWIDTH.COM CLEC, LLC - TX 558      
512-201 A AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-201 0 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-201 1 AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
512-201 2 AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-201 3 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-201 4 AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-201 5 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-201 6   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-201 7 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-201 8 AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
512-201 9 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-202 A AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-202 0 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-202 1 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-202 2 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-202 3 AUSTTXHOX3X  318C CEBRIDGE TELECOM TX , L.P. - TX 558      
512-202 4 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-202 5 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-202 6 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-202 7 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-202 8 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-202 9 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      
512-203 A AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-203 0 AUSWTXGX0MD  5562 METROPCS, INC. 558      
512-203 1 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-203 2 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-203 3 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-203 4 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-203 5 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-203 6 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-203 7 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-203 8 AUSWTXGX0MD  5562 METROPCS, INC. 558      
512-203 9 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-204 A AUSTTXGRX8Y  9748 AMERICAN MESSAGING SERVICES, LLC 558      
512-205 A AUSVTXDK1MD  6630 USA MOBILITY WIRELESS, INC. 558      
512-206 A AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-206 0 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-206 1 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-206 2 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-206 3 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-206 4 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-206 5 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-206 6 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-206 7 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-206 8 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-206 9 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 A AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 0 AUSWTXGX6MD  6529 T-MOBILE USA, INC. 558      
512-207 1 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 2 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 3 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 4 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 5 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 6 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 7 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 8 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-207 9 AUSTTXHODS0  9533 SOUTHWESTERN BELL 558      
512-208 A AUSTTXGRX8Y  9748 AMERICAN MESSAGING SERVICES, LLC 558      
512-209 A AUSTTXGRX8Y  9748 AMERICAN MESSAGING SERVICES, LLC 558      
512-215 A   793K TWC IP ENABLED SERVICES, LLC 558   2025-01-29   
512-215 0   793K TWC IP ENABLED SERVICES, LLC 558      
512-215 1 AUSWTXGX0MD  5562 METROPCS, INC. 558      
512-215 2   793K TWC IP ENABLED SERVICES, LLC 558      
512-215 3 AUSUTX78DS0  7249 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 558      
512-215 4 AUSUTX78DS0  7249 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 558      
512-215 5 AUSUTX78DS0  7249 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 558      
512-215 6 AUSUTX78DS0  7249 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 558      
512-215 7 AUSUTX78DS0  7249 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 558      
512-215 8   793K TWC IP ENABLED SERVICES, LLC 558      
512-215 9   793K TWC IP ENABLED SERVICES, LLC 558      
512-217 A AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-218 A AUSTTXRRDS0  9533 SOUTHWESTERN BELL 558      
512-219 A AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-220 A AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-221 A AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-221 0 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-221 1   903C ONVOY, LLC - TX 558      
512-221 2   903C ONVOY, LLC - TX 558      
512-221 3 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-221 4 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-221 5 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-221 6 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-221 7 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-221 8 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-221 9 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-222 A AUSTTX92X0X  139F WORLDCALL INTERCONNECT INC. 558      
512-222 0 AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-222 1 AUSUTXYYPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-222 2 AUSTTX92X0X  139F WORLDCALL INTERCONNECT INC. 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 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.