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.

Atwater, CA

<< 1 2 3 4 5 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
209-812 4 SKTNCA01XPZ  318J COMCAST IP PHONE, LLC 738   2010-09-03   
209-812 5 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2010-09-05   
209-812 6 SKTNCA01X6Z  516C AT&T CORP. 738   2007-09-14   
209-812 7 SKTNCA01XFY  649C ONVOY, LLC - CA 738   2017-09-10   
209-812 8 SKTNCA01XFY  649C ONVOY, LLC - CA 738   2010-03-08   
209-812 9 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2010-06-11   
209-864 A SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738      
209-864 0 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2022-04-03   
209-864 1 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2022-04-03   
209-864 2 SKTNCA01XJY  981E BANDWIDTH.COM CLEC, LLC - CA 738   2022-02-12   
209-864 3 SKTNCA01XJY  981E BANDWIDTH.COM CLEC, LLC - CA 738   2022-02-12   
209-864 4 SKTNCACZDS2  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2022-02-12   
209-864 5 SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2022-02-12   
209-864 6 SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2022-02-12   
209-864 7 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2022-02-11   
209-864 8 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2022-02-11   
209-864 9 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2022-02-11   
209-891 A SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738      
209-891 0 SKTNCA01XFY  649C ONVOY, LLC - CA 738   2021-07-11   
209-891 1 SKTNCA01XFY  649C ONVOY, LLC - CA 738   2021-07-11   
209-891 2 SKTNCA01XFY  649C ONVOY, LLC - CA 738   2021-07-11   
209-891 3 SKTNCA01XFY  649C ONVOY, LLC - CA 738   2021-07-11   
209-891 4 SKTNCA01XFY  649C ONVOY, LLC - CA 738   2021-08-08   
209-891 5 SKTNCA01XFY  649C ONVOY, LLC - CA 738   2021-08-08   
209-891 6 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2021-07-09   
209-891 7 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2021-07-09   
209-891 8 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2021-07-09   
209-891 9 SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2021-05-09   
350-204 A SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738      
350-204 0 SKTNCA01XIZ  073H TELNYX LLC 738   2023-05-07   
350-204 1 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2023-11-09   
350-204 2 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2023-11-09   
350-204 3 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2023-09-08   
350-204 4 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2023-09-08   
350-204 5 SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2023-08-13   
350-204 6 SKTNCACZDS2  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2023-03-20   
350-204 7 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2023-03-17   
350-204 8 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2023-03-17   
350-204 9 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2023-03-17   
350-224 A SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2024-07-20   
350-224 0 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-11-16   
350-224 1 TRLCCA160MD  776C CHARTER FIBERLINK CA-CCO, LLC - CA 738   2024-08-13   
350-224 2   6529 T-MOBILE USA, INC. 738   2025-06-20   
350-224 3 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-09-15   
350-224 5 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-09-15   
350-224 6 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-09-15   
350-224 7 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-07-21   
350-224 8 SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-07-21   
350-224 9 SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2024-07-20   
350-233 A SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-12-21   

<< 1 2 3 4 5 >>

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.