About LineGuard

Carrier-Grade DNS Content Filtering & Threat Protection

Ultimate DNS-Based Protection for Modern Networks

Secure64 LineGuard is an advanced DNS filtering and cybersecurity platform purpose-built for the most demanding ISP, enterprise, and government environments. Backed by Secure64’s longstanding expertise in DNS infrastructure and secure operating systems, LineGuard is engineered to run cleaner, faster, and more efficiently than any other solution on the market. It combines ultra-low latency performance with robust content filtering, granular EDNS-based policy enforcement, and full deployment flexibility, whether in-network, hybrid, or cloud. This powerful blend of speed, precision, and control delivers unmatched protection, streamlined compliance, and measurable cost savings for organizations that require reliable, high-performance DNS-layer security at scale.

Why Secure64 LineGuard?

Fastest DNS Resolution Globally: Ranked #1 globally on DNSPerf with 12.72 ms average query resolution for superior user experience.
Comprehensive Content Filtering: Block over 500 customizable categories and applications, including adult content, gambling, malware, phishing, ransomware, AI and more.
Carrier-Grade Scalability: Proven ability to protect millions of subscribers with billions of daily DNS queries.
Listed Protective DNS Vendor: Listed by the U.S. Cybersecurity and Infrastructure Security Agency (CISA).
Seamless Cisco Umbrella Replacement: Supports direct policy migration for fast, disruption-free deployments.
Full Deployment Flexibility: Deploy in-network, in the cloud, or hybrid to meet privacy, compliance, and performance needs.
Advanced Threat Intelligence: AI-powered and human-curated lists ensure real-time protection from emerging threats.
Full API Integration: Automate reporting, user provisioning, troubleshooting, and more with extensive API support.

Protect Any Network, Any User

Internet Service Providers (ISPs)
Enterprises & Corporations
Government Agencies
Educational Institutions
Libraries & Public Wi-Fi Networks
Healthcare & Financial Services

Whether you manage millions of subscribers or protect sensitive government networks, Secure64 LineGuard is engineered for environments where security, performance, and compliance are non-negotiable.

Proven Real-World Results

Secure64 LineGuard delivers enterprise-grade performance and value, proven by its impact at scale:

10 Million Subscribers Protected
5.8 Billion DNS Queries Processed Daily
100 Million Threats Blocked Daily
10 to as mush as 50% Cost Savings Compared to Cisco Umbrella
6-Week Full Migration Timeline

These results reflect LineGuard’s ability to combine speed, scalability, and cost-efficiency in a way few solutions can match.

Key LineGuard Capabilities

Feature

Secure64 LineGuard

Content Filtering

500+ Categories and applications

Threat Protection

Malware, Phishing, Ransomware, Scams

EDNS Support

Full EDNS & Source IP Filtering

Policy Management

GUI + Full API Control

Reporting

Custom API, Scheduled Reports, Real-Time Dashboards

Deployment Options

In-Network, Cloud, Hybrid

Reliability

Listed as a Protective DNS Vendor by U.S. CISA

Scalability

Millions of Users

Performance

12.72 ms Latency

Built for ISPs, Enterprises & Governments

Secure64 LineGuard is not just another cloud security product. It was purpose-built to serve carrier networks, complex enterprises, and government infrastructures that require:

Maximum Data Privacy & Sovereignty
Full Network Control
Minimal Latency
Seamless Policy Migration
Compliance with Government & Industry Standards

Experience the LineGuard Difference

Ready to upgrade your DNS security, reduce costs, and improve user experience?

Contact Secure64 Today:
Email: Click Here
Phone: +1-303-242-5890

Schedule a demo and discover how Secure64 LineGuard can protect what matters most.

See How a Major U.S. Carrier Cut Cybersecurity Costs by 50% and Boosted Performance by 3X
Discover how LineGuard by Secure64 protects 6 million users, blocks 100 million threats daily, and delivers lightning-fast results after switching from Cisco Umbrella in just 6 weeks.