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.

Lake Dallas EMS, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
940-270 A FRSCTXBJPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 552      
940-321 A LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      
940-498 A LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      
940-498 0 LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      
940-498 1 LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      
940-498 2   792K CHARTER IP ENABLED SERVICES, LLC 552   2008-08-27   
940-498 3 LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      
940-498 4 LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      
940-498 5 LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      
940-498 6 LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      
940-498 7   792K CHARTER IP ENABLED SERVICES, LLC 552   2009-04-05   
940-498 8 LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      
940-498 9 LKDLTXXADS0  2101 BRIGHTSPEED OF NORTHERN TEXAS, INC. 552      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.