30-day change: –– · No changes detected in the last 180 days.
National rank#12,651of 45,502 · top 28%
CA#1,425of 4,784 · top 30%
Ontario#6of 10 · top 60%
Google 5.0★ (9)Security headers FHosting ApacheDomain 19 yrsNAICS 541512
MSP Signal ranks D1 Defend #12,651 of 45,502 IT service providers nationally. D1 Defend is an IT service provider in Ontario, CA, founded 2000, with 6 staff. It offers Managed Security, Managed IT, Cybersecurity.
rivals by score band · gap to nearest higher / lower · counts, locked rows are previews, not published facts
02
Signal feed
1 events · 26 wks ending Oct 12, 2026
Activity · returned samplelatest week: 1 event
Counts the returned sample; empty weeks do not prove complete monitoring coverage.
Oct 12, 2026
Website changedtitle changed: '--> Premier Cybersecurity Services in Southern California Se' -> 'Premier Cybersecurity Services in Southern California Seen O'source: their website
recorded
Signal planSignal plan · full rival watch: every change at every nearby rival.See the Signal plan
03
Reputation
Google · 9 reviews
5.0
Listing: D1 Defend | Cyber Threat Defense · Computer support and services · Maps ↗review velocity: 0 in the last 365 days
Distribution · listing sample of 9
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95★
4–5★ 9 · 100.0% 3★ 0 · 0.0% 1–2★ 0 · 0.0%, not the same population as the 9 reviews
What reviewers mention
Friendly Staff2
Cybersecurity2
Listings
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Sentiment––
HoursMon–Fri 5 AM to 5 PM · Sat–Sun closed
Other sources · BBB: –– · Facebook rating: ––
From their Google profile
Are you pulling your hair out trying to fortify your computer and network security?
Worry no more! D1 Defend has the ultimate solutions to keep your data safe and your mind at ease.
Since 2007, we have been passionately committed to empowering businesses with reliable, secure & purpose-driven, managed IT support services in Chino, California.
From data recovery to network security, managed IT support & VoIP phone service, we offer a comprehensive suite of solutions designed to meet the unique needs of forward-thinking organizations.
With our cutting-edge technology and expertise, you can be assured that your data is protected 24/7 & minimize downtime with data recovery.
Let us secure your business security while you focus on success!
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Services and offer
from their site
MManaged Security
Managed IT
Cybersecurity
BBusiness Continuity
TThreat Intelligence
CCyber Due Diligence
VVcso Services
Industries
HealthcareFinanceCommerce
Availability
24/7 support claimed their site
Guarantees
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Compliance
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Works with
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Partners
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05
Web & search
MSPSIG.RPT search scan · technical record
Organic visits–/ month est.
Domain authority–/ 100
Top keywords · position
Organic keywords, top keywords, backlinks, referring domains and paid search: Signal plan. Owners see their own.
Website technology
AIAosAmazon AWSApacheApache Http ServerApple Business ManagerApple School ManagerBittitanBootstrapCaptchaCloudflareCloudflare Rocket Loader
“By collaborating with D1 Defend, companies can ensure comprehensive cybersecurity measures, from threat planning and risk management to continuous system updates, guaranteeing top-tier cyber protection.”
Longevity
“Our Valued Clients We have known Eddie for well over ten years.”
up to three quotations per category
10
Frequently asked questions
reuses public facts · FAQ schema
Where is D1 Defend located?
3350 Shelby St #200, Ontario, CA 91764.
How many people work at D1 Defend?
D1 Defend has 6 staff.
What services does D1 Defend offer?
Managed Security, Managed IT, Cybersecurity, Business Continuity, Threat Intelligence, Cyber Due Diligence, Vcso Services.
How does D1 Defend rank among IT providers in Ontario?
#6 of 10 observed providers in Ontario; #12,651 of 45,502 nationally.
Is D1 Defend claimed on MSP Signal?
Not claimed.
Claimed · not shown (unclaimed) · Verified data · conditional on field sources · Registered entity · conditional on legal-entity nameLast observed Sep 10, 2026 · Citation: D1 Defend company profile · https://mspsignal.com/msp/d1-defend
