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Just what you want in your DNS. They’re the reasons Fortune 500 and Alexa 100 companies count on us to secure this cornerstone of their connected world. Request More Information Contact Us Call now: 1-855-727-1209 UltraDNS Enterprise grade, managed authoritative DNS service that ensures 100% website availability along with built-in security for superior protection. Learn More UltraDNS Firewall Cloud-based Neustar Recursive DNS delivers fast and reliable built-in security and threat intelligence that's vital for online applications. Learn More What is UltraDNS? Neustar UltraDNS is an enterprise grade, cloud-based authoritative DNS service that securely delivers fast and accurate query responses to websites and other vital online assets. Learn More Always-on , Ultra Secure . UltraDNS has been rock solid for us and provides a very robust feature set. Read What Our Customers Say Learn More About DNS Maximize your Authoritative & Recursive DNS Strategies Learn how to enhance and safeguard your DNS with Neustar UltraDNS & UltraDNS Firewall. Learn More with this Free Report New COVID-19 Online Traffic and Attack Data Report See web traffic insights from the frontlines — including the rise of collaboration platforms, the search for N95 masks, the fall in queries for travel sites and increase in cyber attacks. Download Now Downtime, No Matter How Short, is Never Good. This short video explains the advantages of Neustar UltraDNS. Watch Video How Primary & Secondary DNS Works Learn why your DNS might be at risk without a secondary service. Discover More About Secondary DNS News & Insights Neustar DNS Shield a Winner at Computing Security Awards Neustar DNS Shield Wins "Best Network Security Solution of the Year" at the Computing Security Awards 2019 Read Blog The Neustar take on the Memcached DDoS Attack This week, the cybersecurity industry was introduced to the Memcache DDoS attack. Read Blog 11 Reasons to Consider a WAF If you're like most IT professionals, you're considering adding a WAF to your security portfolio. Read Blog Let's Connect Learn How Your Company Can Benefit from the Power of Trusted Connections. 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