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.
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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-250 A TULSOKDV8MD  6529 T-MOBILE USA, INC. 538      
539-250 0 TULSOKTBX8Z  939H COMMIO, LLC 538   2021-08-31   
539-250 1 TULSOKTBX8Z  939H COMMIO, LLC 538   2021-08-31   
539-250 2 TULSOKTBX8Z  939H COMMIO, LLC 538   2021-08-31   
539-250 3 TULSOKTBX8Z  939H COMMIO, LLC 538   2021-08-31   
539-250 4 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2021-09-23   
539-250 5 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2023-09-09   
539-250 6 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2021-12-19   
539-250 7 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2021-12-19   
539-250 8 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2021-08-14   
539-250 9 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2021-08-14   
539-252 A TULSOKTBXHY  409F ONVOY, LLC - OK 538      
539-252 0 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2021-08-21   
539-252 1 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2021-08-21   
539-252 2 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2021-08-20   
539-252 3 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2021-08-20   
539-252 4 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2021-08-20   
539-252 5 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2021-08-20   
539-252 6 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2021-08-21   
539-252 7   119F BANDWIDTH.COM CLEC, LLC - OK 538   2026-03-20   
539-252 8 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2021-09-23   
539-252 9 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2021-09-23   
539-260 A TULSOKDV8MD  6529 T-MOBILE USA, INC. 538      
539-260 0 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-03-03   
539-260 1 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-03-03   
539-260 2 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-03-03   
539-260 3 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-03-03   
539-260 4 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-03-03   
539-260 5 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-03-03   
539-260 6 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-03-03   
539-260 7 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-01-28   
539-260 8 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-01-28   
539-260 9 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-01-28   
539-281 A TULSOKDV8MD  6529 T-MOBILE USA, INC. 538      
539-281 0 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2023-08-12   
539-281 1 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2023-08-12   
539-281 2 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2023-08-12   
539-281 3 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2023-08-12   
539-281 4 TULSOKTBXHY  409F ONVOY, LLC - OK 538   2023-08-12   
539-281 5 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-06-02   
539-281 6 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-06-02   
539-281 9 TULSOKDV8MD  6529 T-MOBILE USA, INC. 538   2022-04-24   
539-296 A TULSOKTBX8Z  939H COMMIO, LLC 538   2024-05-10   
539-296 0 TULSOKTBX8Z  939H COMMIO, LLC 538   2024-05-10   
539-296 1 TULSOKTBX8Z  939H COMMIO, LLC 538   2024-05-10   
539-296 2 TULSOKTBX8Z  939H COMMIO, LLC 538   2024-05-10   
539-296 3 TULSOKTBX8Z  939H COMMIO, LLC 538   2024-05-10   
539-296 4   318J COMCAST IP PHONE, LLC 538   2025-11-22   
539-296 5   321J HD CARRIER LLC 538   2026-04-09   
539-296 6   321J HD CARRIER LLC 538   2026-04-09   

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

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