Secure Your Office Network
With a Single DNS Change.
99.999% uptime. 99.9% threat detection. OneDNS blocks ransomware, phishing, and APT attacks at the DNS layer before a connection is ever made. No hardware to buy, no agents to deploy.

Four DNS-layer risks that traditional perimeter security wasn't designed to address.
Traditional perimeter security tools operate above the DNS layer and do not cover the threats that arrive through DNS queries or the distributed workforce that sits outside the perimeter entirely.
Cryptomining Attacks Hidden in Plain Sight
Servers running slow under high load, malicious mining attacks suspected but infected files cannot be located. Traditional endpoint tools miss DNS-level C2 callbacks entirely, leaving the threat embedded in your infrastructure.
Remote Workers Lack DNS-Layer Coverage
Employees accessing the intranet via VPN receive no effective DNS-layer protection. Phishing, malware, and APT campaigns can traverse the trusted VPN tunnel because the DNS queries that precede those connections are never inspected.
Branch Offices Are Security Blind Spots
With departments scattered geographically, deploying and maintaining hardware security devices at every branch is expensive and operationally impossible. Branch offices run unprotected or underprotected, indefinitely.
Alert Overload Leaves Branches Unguarded
The sheer volume of alerts across dozens or hundreds of branches makes it difficult to prioritize the most critical ones. Security teams triage headquarters first, and branch offices typically receive delayed attention; a coverage gap that scales with the number of locations.
Enterprise-grade secure DNS deployed in minutes, protecting everything.
OneDNS is a DNS-based Secure Web Gateway that fuses ThreatBook's threat intelligence directly into the DNS resolution layer. Every query your users make is checked against a cloud database of hundreds of millions of threat indicators before the connection is allowed. Ransomware, phishing, APT C2 callbacks, cryptomining, Trojans, and malware are blocked before they reach your network. No hardware. No agents. A single DNS change is all it takes to get started.
- Blocks threats at DNS resolution before any connection is established
- Works for headquarters, branches, and roaming devices from one SaaS dashboard
- Cloud threat intelligence continuously with hundreds of millions of indicators refreshed in minutes
- SaaS model means no software to maintain, patch, or upgrade manually

Three capabilities. One complete DNS security posture.
OneDNS delivers enterprise-grade protection through a tightly integrated set of capabilities, from the fastest, most reliable DNS resolution to unified branch management at scale.
Secure, Fast, and Stable DNS Resolution
A distributed, decentralized architecture with automatic load balancing and fault self-healing keeps every DNS query fast and protected from tampering. OneDNS has maintained 100% persistent service for more than 10 years, with uptime enterprises can stake their operations on.
Advanced Threat Intelligence Protection
ThreatBook's threat intelligence (listed on the Gartner Threat Intelligence Market Guide for four consecutive years) powers every DNS resolution. Cloud database updates propagate in minutes. OneDNS blocks cryptomining, ransomware, phishing, APT C2, Trojans, and malware at the query level before a connection is ever made.
One Account Manages All Branches
Via SaaS, a company's entire security configuration is managed through one account and a single dashboard. Hierarchical customized management covers all branches with region-based two-level control: each regional team manages their area while headquarters maintains full visibility. No software to maintain or upgrade manually.
Four reasons security teams choose OneDNS over hardware-based alternatives.
A DNS-based approach delivers protection that hardware cannot match, at a fraction of the cost and complexity.
Easy to Deploy
Configure in minutes with no additional hardware fees. Just change your DNS resolver and it's done. The SaaS dashboard is intuitive by design, and because everything is cloud-managed, there are no software upgrades or maintenance windows to schedule.
Security
Protects every workplace with outstanding threat intelligence. Hundreds of millions of intelligence indicators update automatically in minutes to keep pace with the newest threats blocked at the DNS layer.
Steady
100% persistent service for more than 10 years. Backup capabilities, distributed decentralized architecture, automatic load balancing, and fault self-healing ensure your DNS resolution never becomes a point of failure. Service availability up to 99.999%.
Cost-Friendly
One of the best prices on the global market for enterprise DNS security. No hardware procurement, no installation costs, no maintenance contracts. Fewer costs and excellent DNS security that scales across every branch without additional spend.
From DNS change to full network protection in three steps.
No hardware to rack, no agents to roll out. OneDNS connects your entire organization to enterprise-grade DNS security with a single configuration change.
Configure
Change your DNS resolver to OneDNS. Done in minutes. No hardware to buy, no agents to deploy. Works for headquarters, branches, and roaming devices from a single SaaS dashboard. One account covers your entire organization from day one.
Protect
Every DNS query is checked in real time against ThreatBook's cloud threat intelligence database and blocked before any connection is established.
Control
One account. One dashboard. Full visibility across every branch and every roaming device. Create hierarchical security policies. Flag and dispose of compromised endpoints from a single pane of glass, with compliance-ready reporting built in.
Real deployments. Measurable outcomes.
From 2,000-person headquarters to 30,000-branch national networks, OneDNS adapts to the complexity of your organization without adding complexity to your team.
Centralized Office Security: Detecting Threats and Blocking from the Source
Challenge: A 2,000-person headquarters with firewall, internet behavior management, and terminal antivirus in place but ransomware, cryptomining trojans, and malicious software were still frequently identified inside the network.
OneDNS intercepted 50+ malware counter-connections including the latest ransomware variants. Content classification control simultaneously blocked access to sensitive, gambling, pornographic, and violent websites routed outside the country without adding hardware or burdening the security team.
Multi-Branch Unified Management
Challenge: A financial and insurance enterprise with 30,000 branches. Uneven security team capability levels made unified control across that many locations effectively impossible to achieve with hardware-based approaches.
OneDNS provides secure internet access for 200,000+ terminals across 30,000+ branches. Region-based two-level control assigns each regional team responsibility for their area, while headquarters manages the complete organization from a single console with no additional hardware at any branch.
Roaming Endpoint Protection
Challenge: A large bank with thousands of employees working from home via VPN. Off-network devices operated without DNS-layer protection, leaving a coverage gap between the VPN tunnel and the critical internal systems it connected to.
Deployment of OneDNS across 10,000 employee devices completed within one month. During the remote work period, OneDNS identified and processed 10+ threat incidents, providing real-time protection for 30+ employee terminals, all managed through the central dashboard with no disruption to VPN workflows.
Deployed across every major industry in the region.
From national banks to multi-campus universities, OneDNS is the DNS security choice for organizations that cannot afford downtime or blind spots.
See how OneDNS secures your DNS layer across headquarters, branches, and remote devices. Single deployment.
Talk to our team. See why 5,000+ companies trust OneDNS to protect their network at the DNS layer.