Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 945 [Rate centres in NPA 945] [Dial plan for NPA 945]

NXX: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
945-400 A Frisco TX DLLSTX3769Z  473F USFON, INC. - TX 552      
945-400 0 Frisco TX   473F USFON, INC. - TX 552   2021-01-15   
945-400 1 Frisco TX   0701 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2021-07-18   
945-400 2 Frisco TX   6529 T-MOBILE USA, INC. 552   2021-08-12   
945-400 3 Frisco TX   6529 T-MOBILE USA, INC. 552   2021-08-12   
945-400 4 Frisco TX   6529 T-MOBILE USA, INC. 552   2021-08-12   
945-400 5 Frisco TX   6529 T-MOBILE USA, INC. 552   2021-08-12   
945-400 6 Frisco TX   6529 T-MOBILE USA, INC. 552   2021-08-12   
945-400 7 Frisco TX   6529 T-MOBILE USA, INC. 552   2021-08-12   
945-400 8 Frisco TX   6529 T-MOBILE USA, INC. 552   2021-08-12   
945-400 9 Frisco TX   6529 T-MOBILE USA, INC. 552   2021-08-12   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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