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NAICS 561621 · Security Systems Services (except Locksmiths)

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Security systems in Fontana, CA

8 security systems in Fontana, CA; 204 within 30 miles. Every listing checked against the issuer's record, in the published order.

  1. Armor of God (Aog)

    ActiveAlarm Company Operator

    Fontana, CA

    Ask it
    Proof for Armor of God (Aog)
    License
    US-CA-DCA BSIS-ACO-7543
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Oct 31, 2027
    Checked
    Oct 23, 2026
    Where
    Fontana, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  2. Avant

    ActiveCorporation registered in SAM.gov

    Fontana, CA

    Ask it
    Proof for Avant
    SAM.gov registration
    US-GSA-SAM Q8MFMT76LBS6
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Jan 24, 2027
    Checked
    Oct 23, 2026
    Where
    Fontana, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  3. Chavez Security, Inc.

    ActiveAlarm Company Operator

    Fontana, CA

    Ask it
    Proof for Chavez Security, Inc.
    License
    US-CA-DCA BSIS-ACO-7044
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Jul 31, 2027
    Checked
    Oct 23, 2026
    Where
    Fontana, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  4. Gotech Security Systems

    ActiveAlarm Company Operator

    Fontana, CA

    Ask it
    Proof for Gotech Security Systems
    License
    US-CA-DCA BSIS-ACO-5891
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Jun 30, 2027
    Checked
    Oct 23, 2026
    Where
    Fontana, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  5. Mark Brown & Associates Inc

    ActiveAlarm Company Operator

    Fontana, CA

    Ask it
    Proof for Mark Brown & Associates Inc
    License
    US-CA-DCA BSIS-ACO-3048
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Feb 28, 2027
    Checked
    Oct 23, 2026
    Where
    Fontana, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  6. Mr Alarm

    ActiveAlarm Company Operator

    Fontana, CA

    Ask it
    Proof for Mr Alarm
    License
    US-CA-DCA BSIS-ACO-5401
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Feb 29, 2028
    Checked
    Oct 23, 2026
    Where
    Fontana, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  7. Otis Security Prods

    ActiveAlarm Company Operator

    Fontana, CA

    Ask it
    Proof for Otis Security Prods
    License
    US-CA-DCA BSIS-ACO-4636
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Mar 31, 2028
    Checked
    Oct 23, 2026
    Where
    Fontana, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  8. Security Line Company

    ActiveAlarm Company Operator

    Fontana, CA

    Ask it
    Proof for Security Line Company
    License
    US-CA-DCA BSIS-ACO-3294
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Dec 31, 2027
    Checked
    Oct 23, 2026
    Where
    Fontana, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  9. Defend Alarm and Fire, Inc.

    ActiveAlarm Company Operator

    Rialto, CA · 4 mi away

    Ask it
    Proof for Defend Alarm and Fire, Inc.
    License
    US-CA-DCA BSIS-ACO-8055
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Aug 31, 2028
    Checked
    Oct 23, 2026
    Where
    Rialto, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  10. Etiwanda Security Services

    ActiveAlarm Company Operator

    Etiwanda, CA · 4 mi away

    Ask it
    Proof for Etiwanda Security Services
    License
    US-CA-DCA BSIS-ACO-5955
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Oct 31, 2027
    Checked
    Oct 23, 2026
    Where
    Etiwanda, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  11. Smoke Busters Inc.

    ActiveAlarm Company Operator

    Rialto, CA · 4 mi away

    Ask it
    Proof for Smoke Busters Inc.
    License
    US-CA-DCA BSIS-ACO-7676
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Apr 30, 2027
    Checked
    Oct 23, 2026
    Where
    Rialto, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  12. American Threat Assessment Consulting, Inc.

    ActiveCorporation registered in SAM.gov

    Rancho Cucamonga, CA · 7 mi away

    Ask it
    Proof for American Threat Assessment Consulting, Inc.
    SAM.gov registration
    US-GSA-SAM R4BKNJJ4ECJ7
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Sep 16, 2027
    Checked
    Oct 23, 2026
    Where
    Rancho Cucamonga, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  13. T R L Systems

    ActiveCorporation registered in SAM.gov

    Rancho Cucamonga, CA · 7 mi away

    Ask it
    Proof for T R L Systems
    SAM.gov registration
    US-GSA-SAM MRURKH7KHLZ5
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Feb 4, 2027
    Checked
    Oct 23, 2026
    Where
    Rancho Cucamonga, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  14. Time and Alarm Systems

    ActiveCorporation registered in SAM.gov

    Jurupa Valley, CA · 9 mi away

    Ask it
    Proof for Time and Alarm Systems
    SAM.gov registration
    US-GSA-SAM PTCPAFJ9MBC9
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Sep 21, 2027
    Checked
    Oct 23, 2026
    Where
    Jurupa Valley, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  15. Advanced Monitoring, Inc

    ActiveCorporation registered in SAM.gov

    Ontario, CA · 9 mi away

    Ask it
    Proof for Advanced Monitoring, Inc
    SAM.gov registration
    US-GSA-SAM SY7HMCLAS9M8
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    May 13, 2027
    Checked
    Oct 23, 2026
    Where
    Ontario, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  16. Advanced Monitoring, Inc.

    ActiveAlarm Company Operator

    Ontario, CA · 9 mi away

    Ask it
    Proof for Advanced Monitoring, Inc.
    License
    US-CA-DCA BSIS-ACO-7765
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    May 31, 2028
    Checked
    Oct 23, 2026
    Where
    Ontario, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  17. Alertone Service, Inc.

    ActiveAlarm Company Operator

    Rancho Cucamonga, CA · 7 mi away

    Ask it
    Proof for Alertone Service, Inc.
    License
    US-CA-DCA BSIS-ACO-7643
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Dec 31, 2026
    Checked
    Oct 23, 2026
    Where
    Rancho Cucamonga, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  18. American Threat Assessment Consulting Inc

    ActiveAlarm Company Operator

    Rancho Cucamonga, CA · 7 mi away

    Ask it
    Proof for American Threat Assessment Consulting Inc
    License
    US-CA-DCA BSIS-ACO-7816
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Oct 31, 2026
    Checked
    Oct 23, 2026
    Where
    Rancho Cucamonga, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  19. Bay Alarm Company

    ActiveAlarm Company Branch

    Ontario, CA · 9 mi away

    Ask it
    Proof for Bay Alarm Company
    License
    US-CA-DCA BSIS-ACB-5441
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Branch
    Expires
    Nov 30, 2028
    Checked
    Oct 23, 2026
    Where
    Ontario, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  20. D C Electronics

    ActiveAlarm Company Operator

    Riverside, CA · 7 mi away

    Ask it
    Proof for D C Electronics
    License
    US-CA-DCA BSIS-ACO-1255
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Oct 31, 2026
    Checked
    Oct 23, 2026
    Where
    Riverside, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

More cities in California

Livermore 82San Diego 51Sacramento 43Los Angeles 42Fresno 38San Jose 36Anaheim 23Bakersfield 23San Francisco 23Irvine 20Riverside 20Simi Valley 16El Cajon 15Stockton 15Corona 14Huntington Beach 14

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Checked facts from public license files · How ranking works