Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
350-252 7 Turlock CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2026-04-29   
350-254 1 Tracy CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2026-06-16   
350-256 8 Modesto CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2026-03-23   
350-256 9 Modesto CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2026-02-15   
350-353 7 Modesto CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2025-10-27   
350-353 8 Modesto CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2025-11-12   
350-353 9 Modesto CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2025-12-20   
350-355 2 Stockton CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-09-10   
350-355 3 Stockton CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-10-16   
350-355 4 Stockton CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-10-16   
350-503 1 Merced CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-01-29   
350-503 2 Merced CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-05-30   
350-503 3 Merced CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-06-28   
350-503 5 Merced CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-08-26   
350-503 9 Merced CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-04-26   
350-600 1 Oakdale CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-03-08   
350-600 2 Oakdale CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-06-10   
350-600 6 Oakdale CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-12-06   
350-600 7 Oakdale CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2025-12-15   
350-777 1 Galt CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2023-09-10   
350-900 4 Tracy CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-03-23   
350-930 3 Turlock CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-07-29   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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