Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 409 [Rate centres in NPA 409] [Dial plan for NPA 409]

NXX: 445

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
409-445 A Sour Lake TX BUMTTX14IMD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 562      
409-445 0 Sour Lake TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 562      
409-445 1 Sour Lake TX   793K TWC IP ENABLED SERVICES, LLC 562   2022-12-11   
409-445 2 Sour Lake TX   516C AT&T CORP. 562   2012-01-22   
409-445 3 Sour Lake TX   903C ONVOY, LLC - TX 562   2020-08-31   
409-445 4 Sour Lake TX   903C ONVOY, LLC - TX 562   2020-08-31   
409-445 5 Sour Lake TX   624H ONVOY SPECTRUM, LLC 562   2021-12-04   
409-445 6 Sour Lake TX   624H ONVOY SPECTRUM, LLC 562   2021-07-03   
409-445 7 Sour Lake TX   624H ONVOY SPECTRUM, LLC 562   2021-12-04   
409-445 8 Sour Lake TX   515J IP HORIZON LLC 562   2025-03-06   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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