Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 210 [Rate centres in NPA 210] [Dial plan for NPA 210]

Region: TX

OCN: 321J HD CARRIER LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
210-576 8 San Antonio TX   566   2025-08-14   
210-940 A San Antonio TX SNANTXCA86Z  566      
210-940 9 San Antonio TX   566   2020-04-12   

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

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