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Control D
Toronto, Canada
What it is
Control D is a customizable DNS filtering and traffic redirection platform for controlling access to domains, services, and browsing activity. It offers 20 content categories, custom rules, and more than 1,000 premade services that users can block or allow. Malware protection uses threat intelligence feeds and machine learning, with selectable aggressiveness levels. Supported DNS protocols include DNS-over-HTTPS, DNS-over-TLS, DNS-over-QUIC, and DNS-over-HTTPS/3, with IPv4 and IPv6 support. The service integrates with Windows, macOS, Linux, iOS, Android, browsers, routers, RMM tools, and Tailscale; its API supports generating and invalidating tokens. A free plan is available, and the SMB plan costs $2 a month, billed per endpoint, with self-serve deployment and real-time analytics. Raw query logs are retained for 30 days, while lower-resolution analytics may remain for up to one year. Customers can select analytics storage in New York, Amsterdam, or Sydney. Control D was founded in Toronto in 2021.
For and against
For
- Free plan available.
- More than 1,000 premade services can be controlled.
- Supports four DNS-over-* protocols and IPv4/IPv6.
- Analytics storage locations can be selected.
Against
- SMB plan costs $2 a month per endpoint.
- Raw query logs are retained for 30 days.
- Some plans require contacting sales or partnerships.
The verdict
Control D combines DNS filtering, malware protection, and traffic controls across a broad set of platforms. The free plan offers an entry point, while teams should check plan details and per-endpoint costs against their needs.
Who it suits
Control D suits individuals, IT administrators, SMBs, and enterprises seeking customizable DNS security and internet controls. Its integrations also make it relevant to organizations managing devices, routers, or client fleets.
Plans and prices
SMB
self-serve deployment · real-time analytics · core DNS filtering
Read 15 Oct 2026 · controld.com
Enterprise
dedicated infrastructure · named customer-success manager · SIEM log streaming
Read 15 Oct 2026 · controld.com
MSP / Channel
multi-tenant · per-client profiles and billing · 99.99% uptime
Read 15 Oct 2026 · controld.com
School / Non-profit
discounted rate · real-time analytics
Read 15 Oct 2026 · controld.com
On the record
- AI data use
- The Trust Center says customer data is never used to train its AI systems; its optional support chatbot logs are retained for 90 days.controld.com · read 30 Sep 2026
- Analytics retention
- Raw query logs are retained for 30 days and lower-resolution analytics for up to one year.controld.com · read 15 Oct 2026
- API
- The public API uses dashboard-created bearer tokens with read or write scopes and optional source-IP restrictions.docs.controld.com · read 15 Oct 2026
- API limitation
- Control D warns that its API has no versioning and may introduce breaking changes without notice.docs.controld.com · read 15 Oct 2026
- Company
- The About Us page states that Control D was founded in 2021 in Toronto, Canada.controld.com · read 30 Sep 2026
- Company facts
- Control D Inc is described as a privately held Toronto computer and network-security company founded in 2021 with 51–200 employees on LinkedIn.ca.linkedin.com · read 15 Oct 2026
- Content filtering
- Administrators can choose from 20 content categories and add custom allow or block rules.controld.com · read 15 Oct 2026
- Data locations
- Customers can select analytics storage in New York, Amsterdam, or Sydney.controld.com · read 30 Sep 2026
- Data protection
- The Trust Center says data is encrypted with AES-256 at rest and TLS 1.2 or higher in transit, and customers can delete analytics data through the dashboard.controld.com · read 30 Sep 2026
- Data regions
- Analytics storage can be selected among New York, Amsterdam and Sydney.controld.com · read 15 Oct 2026
- Developer tooling
- ctrld supports shell, PowerShell and Docker installation, Go 1.21-plus source builds, CLI management and API or TOML configuration.github.com · read 15 Oct 2026
- DNS protocols
- Control D supports DNS-over-HTTPS, DNS-over-HTTPS/3, DNS-over-TLS, DNS-over-QUIC and legacy UDP port 53.controld.com · read 15 Oct 2026
- Downloads
- The GUI utility is distributed as Windows EXE, macOS DMG, Google Play and App Store applications, with managed and native modes.docs.controld.com · read 15 Oct 2026
- Filtering
- Control D offers 20 content categories, custom rules, and more than 1,000 premade services that can be blocked or unblocked.controld.com · read 30 Sep 2026
- Integrations
- Documented integrations include Asus Merlin, DD-WRT, Firewalla, OpenWRT, pfSense, OPNsense, Ubiquiti, Synology, major operating systems, browsers, RMM tools and Tailscale.controld.com · read 15 Oct 2026
- Intended users
- Control D says it is designed for SMBs, enterprises, individuals, and IT administrators seeking customizable DNS security and internet controls.controld.com · read 30 Sep 2026
- Limit: Android app
- Google Play reviewers report the app can lose connectivity after sleep or extended running, while recommending Android Private DNS as a more reliable alternative.play.google.com · read 15 Oct 2026
- Limit: Apple app
- App Store reviewers request automatic Wi-Fi profile switching, a fuller iOS interface and dashboard administration, and one reports outdated DoH3 UI.apps.apple.com · read 15 Oct 2026
