UltraDNS
Route smarter. Recover faster.
Strengthen resilience, improve performance, and simplify DNS management at scale.
Reduce latency
Route queries globally to improve response time and user experience.
Build resilience
Add redundancy and failover to keep DNS available during outages and attacks.
Protect DNS
Safeguard DNS with built-in DDoS protection and DNSSEC integrity.
Built for global availability
Ensure 100% uptime
Supported by always-on DNS resolution.
Accelerate resolution
Improve user experience with faster DNS responses across regions.
Reduce operational toil
Simplify DNS changes with centralized control and automation.
Improve continuity
Maintain resolution with active-active redundancy and disaster recovery.
Explore UltraDNS & UltraDNS²
Authoritative DNS for global performance, built-in security, and high-availability continuity.
Operate at global scale
- Manage up to 150 billion authoritative DNS queries per day
- Deliver low-latency responses with rapid cache updates
- Optimize delivery with advanced traffic management services
Built-in layered protection
- Nameserver segmentation helps prevent malicious activity
- DNSSEC provides protection from cache poisoning and DNS hijacking
- Mitigate disruption with built-in DNS DDoS protection
Automate DNS changes
- Automatically conducts Domain Control Validation (DCV) checks
- Limits and controls access to DNS records
- Enforce routing and failover policies across domains
Add DNS redundancy
- Meet continuity goals with primary and secondary DNS options
- Add UltraDNS² as an independent secondary Anycast network
- Get 24/7 support backed by enterprise SLAs
Designed for always-on resolution
Deploy authoritative DNS across complex, distributed environments without compromising performance or resilience.
Low latency global access
Resolve queries fast worldwide with a global Anycast network and distributed PoPs.
Business driven multi-CDN support
Steer traffic across CDNs using routing policies and real-time performance insights.
Active-active failover solution
Add UltraDNS² as a distinct secondary network for continuity and disaster recovery.
Why security leaders choose DigiCert
100B+
Authoritative DNS queries/day
100%
Resolution availability SLA
25+
Annual audits
90%+
Fortune 500
Trusted availability for online banking
"UltraDNS ticked all the right boxes for us as a primary DNS provider—reliability, resilience, and support."
Andrew Winkless, Infrastructure Manager
Yorkshire Building Society
DigiCert wins 2026 Global DNS Strategy Leadership Award
Recognized for world-class performance and strategic innovation, DigiCert has earned top honors from Frost & Sullivan.
This award highlights our commitment to securing global DNS infrastructure with enterprise-grade resilience and to converging DNS and PKI to address rising operational and security challenges.
Explore UltraDNS in depth
Case study
Yorkshire Building Society strengthens online banking availability with DigiCert UltraDNS
Case study
Miva protected its eCommerce platform from DDoS attacks and spoofing using UltraDNS
You asked. We answered.
Explore answers to common questions about DigiCert UltraDNS and enterprise DNS.
