Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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China Spring, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
254-836 7   793K TWC IP ENABLED SERVICES, LLC 556   2011-01-14   
254-836 8   073H TELNYX LLC 556   2019-02-07   
254-836 9   9533 SOUTHWESTERN BELL 556      

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

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