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.

Edinburg, TX

<< 1 2 3 4 5

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
956-957 A HRLNTXHGX1X  903C ONVOY, LLC - TX 568      
956-957 0 HRLNTXHG8MD  073H TELNYX LLC 568   2021-03-14   
956-957 1 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2021-03-25   
956-957 2 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2021-03-25   
956-957 3 HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-11-15   
956-957 4 HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-06-24   
956-957 5 HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2020-12-19   
956-957 6   515J IP HORIZON LLC 568   2022-03-31   
956-957 7 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2021-01-08   
956-957 8 HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2021-04-29   
956-957 9 HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2023-12-31   
956-991 A HRLNTXHGXPX  515J IP HORIZON LLC 568   2025-06-01   
956-991 0 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-08-07   
956-991 1 HRLNTXHGXPX  515J IP HORIZON LLC 568   2025-06-01   
956-991 2 HRLNTXHGXPX  515J IP HORIZON LLC 568   2025-06-01   
956-991 3 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-08-07   
956-991 4 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-08-07   
956-991 6 HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2025-08-12   
956-991 7 HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2026-02-24   
956-991 8 HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2026-02-24   

<< 1 2 3 4 5

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.