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 57 58 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
737-423 8 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2025-10-18   
737-423 9 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2025-10-18   
737-428 A AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 0 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 1 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 2 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 3 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 4 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 5 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 6 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 7 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 8 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-428 9 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-12-13   
737-429 A AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 0 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 1 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 2 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 3 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 4 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 5 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 6 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 7 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 8 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-429 9 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-12-29   
737-430 A AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 0 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 1 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 2 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 3 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 4 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 5 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 6 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 7 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 8 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-430 9 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-01-04   
737-431 A AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 0 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 1 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 2 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 3 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 4 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 5 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 6 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 7 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 8 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-431 9 AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-02-06   
737-434 A AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-04-11   
737-434 0 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-04-11   
737-434 1 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-04-11   
737-434 2 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-04-11   
737-434 3 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-04-11   
737-434 4 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-04-11   
737-434 5 AUSTTXGR62Z  490J BOOST SUBSCRIBERCO L.L.C. 558   2026-04-13   
737-434 6 AUSTTXGR62Z  490J BOOST SUBSCRIBERCO L.L.C. 558   2026-06-16   
737-434 7 AUSTTXGR09Z  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2026-04-17   
737-434 8 AUSTTXGR09Z  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2026-04-17   
737-434 9 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-04-13   
737-435 A AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 0 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 1 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 2 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 3 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 4 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 5 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 6 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 7 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 8 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-435 9 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-07-12   
737-438 A AUSTTXGR78Z  883K AHOI LLC 558   2026-05-17   
737-438 0 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-05-18   
737-438 1 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-05-18   
737-438 2 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-06-15   
737-438 3 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-06-15   
737-438 4 AUSTTXGR78Z  883K AHOI LLC 558   2026-05-17   
737-438 5 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-06-15   
737-438 6 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-06-15   
737-438 7 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-06-15   
737-438 8 AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-05-18   
737-438 9 AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-06-15   
737-439 A   903C ONVOY, LLC - TX 558   2026-08-21   
737-439 0   903C ONVOY, LLC - TX 558   2026-08-21   
737-439 1   903C ONVOY, LLC - TX 558   2026-08-21   
737-439 2   903C ONVOY, LLC - TX 558   2026-08-21   
737-439 3   903C ONVOY, LLC - TX 558   2026-08-21   
737-439 4   903C ONVOY, LLC - TX 558   2026-08-21   
737-439 5   903C ONVOY, LLC - TX 558   2026-08-21   
737-439 6   903C ONVOY, LLC - TX 558   2026-08-24   
737-439 7   903C ONVOY, LLC - TX 558   2026-08-24   
737-439 8   903C ONVOY, LLC - TX 558   2026-08-24   
737-439 9   903C ONVOY, LLC - TX 558   2026-08-24   
737-440 A AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   
737-440 0 AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   
737-440 1 AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   
737-440 2 AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   
737-440 3 AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   
737-440 4 AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   
737-440 5 AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   
737-440 6 AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   
737-440 7 AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   
737-440 8 AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2026-08-13   

<< 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 >>

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.