Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

NXX: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-400 A Buda TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558      
512-400 0 Buda TX   004F BANDWIDTH.COM CLEC, LLC - TX 558   2011-02-24   
512-400 1 Buda TX   6529 T-MOBILE USA, INC. 558   2016-05-23   
512-400 2 Buda TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2011-04-16   
512-400 3 Buda TX   903C ONVOY, LLC - TX 558   2012-07-13   
512-400 4 Buda TX   7249 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 558   2010-10-11   
512-400 5 Buda TX   6529 T-MOBILE USA, INC. 558   2011-03-31   
512-400 6 Buda TX   7249 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 558   2012-08-01   
512-400 7 Buda TX   903C ONVOY, LLC - TX 558   2013-02-20   
512-400 8 Buda TX   6529 T-MOBILE USA, INC. 558   2013-12-18   
512-400 9 Buda TX   6529 T-MOBILE USA, INC. 558   2013-12-18   

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

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