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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
210-421 A San Antonio TX SNANTX91X7Y  6529 T-MOBILE USA, INC. 566      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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