Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 903 [Rate centres in NPA 903] [Dial plan for NPA 903]

NXX: 443

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-443 A Ladonia TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
903-443 0 Ladonia TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
903-443 1 Ladonia TX DLLSTX97X1X  073H TELNYX LLC 552   2019-05-17   
903-443 3 Ladonia TX   145J TERRA NOVA TELECOM INC. 552   2021-08-09   
903-443 4 Ladonia TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2010-11-08   
903-443 5 Ladonia TX   515J IP HORIZON LLC 552   2017-12-15   
903-443 6 Ladonia TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2011-09-18   
903-443 7 Ladonia TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2008-08-08   
903-443 8 Ladonia TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2016-04-01   
903-443 9 Ladonia TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552   2024-05-04   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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