DNSFilter
Washington DC-based DNS security provider using real-time AI domain analysis to block malicious content for 4M+ end users.
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DNSFilter provides cloud-based DNS filtering and threat protection, blocking access to malicious and unwanted domains before a connection is ever made. Its core differentiator is speed: the platform uses AI to analyze and classify domains in real time, rather than the batch or human-review processes that leave competing DNS security tools with days- or weeks-long gaps before newly registered malicious domains get blocked.
Founded in 2015 and headquartered in Washington, DC, DNSFilter protects over 4 million end users and is used by more than 57,000 organizations, spanning managed service provider (MSP) partners as well as direct mid-market and enterprise customers. The company has raised $50.5 million across four funding rounds and reports roughly 185 employees as of mid-2026.
DNS-layer filtering is a mature security control, and DNSFilter’s edge over legacy providers rests on real-time AI classification rather than a fundamentally new architecture. It competes against both established players (Cisco Umbrella) and other modern entrants (Cloudflare Gateway), meaning its long-term differentiation will depend on sustained detection-speed advantages rather than the category itself being novel.
Innovation Matrix Assessment
Consistent investment in real-time AI domain classification to stay ahead of newly-registered malicious domains.
Blocks threats at the DNS layer before a connection completes, a low-friction control for MSPs and mid-market IT teams.
57,000+ organizations and $50.5M raised across four rounds is real, verifiable adoption for the category. Recognized in Cyber Defense Media Group's 2026 Global InfoSec Awards (3 awards), independently juried industry validation of market traction.
DNS filtering is a mature, well-established security control; DNSFilter improves detection speed rather than reinventing the category.
Scale of protected users (4M+) is a meaningful real-world signal, though independent detection-rate benchmarks are limited.
DNS-layer protection remains a durable baseline control even as attackers shift tactics.
Why CISOs Should Care
Blocks malicious domains before connection at the DNS layer, closing gaps left by DNS providers that rely on slower human review.
What Makes It Different
Real-time AI domain classification versus competitors' days-to-weeks human-review cycles for newly registered malicious domains.
The Matrix Verdict
63/100 — INCREMENTAL INNOVATOR
A mature-category vendor with a real detection-speed edge; a solid Incremental Innovator with broad, verifiable adoption.
Editorial Note: Claims vs. Verified Findings
User and organization counts are vendor-reported; detection-speed comparisons to competitors are not independently benchmarked here.
Sources
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