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]

NXX: 320

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
210-320 A San Antonio TX SNAUTXCOPS0  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 566      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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