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Who is Control D?
Control D is a cloud-delivered DNS security and policy enforcement platform, operated by Windscribe, that resolves, filters, and logs domain queries across endpoints, networks, and distributed environments.
- DNS-layer threat protection and malicious domain blocking
- Category and domain-level policy enforcement
- Encrypted DNS resolution over DoH, DoT, and DoQ protocols
- Multi-tenant management for endpoints, routers, and networks
- Query analytics and activity logging for administrators
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More About Control D
Control D is positioned as a DNS-based control point within enterprise and managed network environments. Organizations deploy it to filter outbound name resolution before a connection is established, which allows security and IT teams to enforce acceptable use, block known malicious infrastructure, and reduce exposure to phishing and command-and-control traffic without requiring inline appliances for every site.
The service is associated with several established architectures and protocols. Its resolver supports encrypted transport methods such as DNS over HTTPS, DNS over TLS, and DNS over QUIC, which protect query confidentiality on untrusted networks. Administrators typically configure policies centrally and apply them through endpoint agents, router integrations, or direct resolver addresses. This model aligns with zero trust principles, in which access decisions are made per request rather than assumed from network location.
In the broader market, DNS filtering is generally grouped with secure web gateways, protective DNS services, and security service edge capabilities within the network security category. Control D is commonly compared with other protective DNS offerings on the basis of policy granularity, supported deployment models, and reporting depth. Comparisons beyond these general functional characteristics depend on specific product editions and should be validated against current documentation.
The business significance of DNS-layer filtering lies in its low deployment overhead and its coverage of distributed workforces. Because name resolution precedes most application traffic, DNS controls can intercept threats early and produce telemetry that supports incident investigation. For managed service providers and IT teams supporting multiple tenants, centralized administration and per-group policies reduce the operational burden of maintaining separate filtering configurations.
Directory positioning for Control D reflects its current solution areas: DNS filtering, protective DNS, endpoint and network policy enforcement, and privacy-oriented resolution. These areas sit within the cybersecurity and network security domains, with particular relevance to organizations seeking layered defenses that combine resolver-level enforcement with endpoint and identity controls.
Our description of Control D. Updated October 2026.
