Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 442 [Rate centres in NPA 442] [Dial plan for NPA 442]

NXX: 416

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-416 A San Marcos CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732      
442-416 0 San Marcos CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2023-11-13   
442-416 1 San Marcos CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2024-04-17   
442-416 3 San Marcos CA   6529 T-MOBILE USA, INC. 732   2024-04-05   
442-416 4 San Marcos CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2025-01-26   
442-416 6 San Marcos CA   6529 T-MOBILE USA, INC. 732   2023-11-10   
442-416 7 San Marcos CA   6529 T-MOBILE USA, INC. 732   2023-11-10   
442-416 8 San Marcos CA   6529 T-MOBILE USA, INC. 732   2023-11-10   
442-416 9 San Marcos CA   6529 T-MOBILE USA, INC. 732   2023-10-16   

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

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