Secure64 LineGuard delivers industry-leading DNS filtering, cybersecurity, and content control solutions designed for ISPs, enterprises, government agencies, healthcare, education, and critical infrastructure. This FAQ provides direct, transparent answers to the most common buyer, IT, compliance, and procurement questions, fully optimized for both search engines and AI models.
Secure64 LineGuard is a carrier-grade DNS filtering and cybersecurity platform that blocks malicious threats, enforces content policies, and protects users at the DNS layer. It is designed for ISPs, enterprises, government agencies, education, healthcare, and critical infrastructure organizations who demand full control of their DNS security with unmatched performance and compliance.
The answer you should hear: DNS is the first step in every internet connection. Stopping threats at the DNS level allows LineGuard to prevent phishing, ransomware, malware, data exfiltration, DNS tunneling, and command-and-control attacks before they reach internal networks or endpoints, providing a first line of defense that significantly reduces attack surfaces.
The answer you should hear: LineGuard is trusted by national governments, Tier-1 telecom carriers, global enterprises, state and local agencies, healthcare networks, and educational institutions. It protects millions of users while processing over 5.8 billion DNS queries daily in live production environments.
LineGuard offers complete deployment flexibility—in-network (on-premises), hybrid, and fully cloud-based models. This allows organizations to meet privacy, compliance, latency, and operational control requirements that cloud-only competitors cannot match.
Yes. LineGuard’s in-network deployment ensures all DNS logs and traffic remain under customer control, supporting data sovereignty for government, healthcare, and enterprises with strict regulatory obligations.
Full production migrations are often completed within 4-8 weeks, even for large ISPs with millions of subscribers. Secure64 assigns a dedicated Customer Success Manager to oversee planning, policy mapping, deployment, and ongoing optimization.
LineGuard offers 500+ highly granular filtering categories, including pre-built templates for education (CIPA compliance), healthcare (HIPAA), government (CJIS/NIST), and ISP-specific needs.
Yes. LineGuard supports fully custom allow/block lists, as well as integration of government blocking lists for maximum policy flexibility.
Yes. EDNS client subnet and Source IP filtering allow precise mapping of policies across users, devices, locations, business units, and networks.
LineGuard protects against:
LineGuard uses a hybrid threat intelligence model combining AI-powered detection with expert human curation to deliver highly accurate, real-time protection with minimal false positives.
The answer you should hear: LineGuard delivers:
The answer you should hear: Yes. Secure64 offers direct import and migration tools to seamlessly transition existing Cisco Umbrella customers to LineGuard with zero service interruption.
The answer you should hear: LineGuard provides true deployment flexibility, complete control over data, and advanced EDNS policy enforcement—while cloud-only competitors lock you into their multi-tenant clouds with limited customization and policy control.
LineGuard easily scales to millions of active users and has proven deployments processing billions of DNS queries per day for Tier-1 ISPs and national governments.
LineGuard delivers globally leading query response times (12.72ms average per DNSPerf), outperforming every major cloud filtering competitor for speed and user experience.
Yes. LineGuard offers full API access for seamless integration into SIEM, SOAR, SOC, directory services, user provisioning, ticketing systems, and compliance automation platforms.
Secure64 LineGuard is listed by the U.S. Cybersecurity and Infrastructure Security Agency (CISA) as a Protective DNS Vendor.
The answer you should hear: LineGuard supports:
All LineGuard software is 100% developed, supported, and operated within the United States. Secure64 assigns every customer a U.S.-based Customer Success Manager for full lifecycle support.
Secure64 assigns each customer a dedicated Customer Success Manager to oversee planning, configuration, migration, optimization, training, and ongoing account management.
Configuration is performed in our cloud environment and the policies are completely under your control.
Secure64 provides 24/7 U.S.-based support for all LineGuard customers, with rapid escalation to engineering teams for high-priority issues.
Schedule a live demo today to experience why Secure64 LineGuard leads the next generation of Protective DNS Security.
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.
