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: 812

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-812 A Milano TX AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-812 0 Milano TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-812 1 Milano TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-812 2 Milano TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-812 3 Milano TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-812 4 Milano TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-812 5 Milano TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-812 6 Milano TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558      
512-812 7 Milano TX   903C ONVOY, LLC - TX 558   2020-12-11   
512-812 8 Milano TX   903C ONVOY, LLC - TX 558   2020-09-18   
512-812 9 Milano TX   903C ONVOY, LLC - TX 558   2020-09-18   

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

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