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.

Denton, TX

<< 1 2 3 4 5 6

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
940-843 8 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2022-03-18   
940-843 9 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2022-03-18   
940-891 A DNTNTXXADS1  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-898 A DNTNTXXADS1  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-977 A DLLSTX97X5X  965H FRACTEL, LLC 552      
940-977 0 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2021-09-30   
940-977 1 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2021-08-31   
940-977 2 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2022-03-18   
940-977 3 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2022-03-18   
940-977 4 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2022-03-18   
940-977 5 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2022-03-18   
940-977 6 DLLSTXJFDMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2022-04-11   
940-977 7 DLLSTX97X5X  965H FRACTEL, LLC 552   2021-01-29   
940-977 8 DLLSTXJFDMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2022-04-11   
940-977 9 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2021-08-31   
940-999 A DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
940-999 0 DLLSTXJFDMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2014-10-05   
940-999 1 CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2014-10-06   
940-999 2 DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552   2014-10-06   
940-999 3 CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2014-11-09   
940-999 4 CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2014-11-09   
940-999 5 DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2014-08-19   
940-999 6 CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2014-11-09   
940-999 7 CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2015-01-04   
940-999 8 DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2016-04-03   
940-999 9 DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552   2014-07-12   

<< 1 2 3 4 5 6

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.