Nominum provides highly scalable, reliable and secure DNS and DHCP servers. These products were developed by Nominum engineers based on lessons they learned from writing BIND (version 9) and ISC-DHCP (version 3). These open source products were written as reference implementation of the protocol specifications primarily to demonstrate those specifications were implementable. In contrast, Nominum products are commercial grade and focus on carrier-class requirements and have scalability, reliability, availability, and performance characteristics that are unmatched on the Internet.  
 
Nominum products feature:

• Leading performance and scalability
  Nominum products are designed for high scalability and low response latency. They make optimum usage of available DNS/DHCP resources and avoid all-in-memory implementations that degrade or fail in unexpected ways as resource management needs grow. 
  
• No downtime
  Most DNS or DHCP servers cannot be reconfigured online without a shutdown and restart, have lengthy startup times while they read all their data into memory, and will not recover from spikes in traffic or Denial of Service (DoS) attacks. Nominum products were designed to avoid these fundamental flaws.
  
• Superior security
  Securing DNS is getting more and more attention as that critical service is increasingly targeted by hackers. Nominum products include the most up-to-date security features for data authentication, query/response validation, logging and auditing.
  
• State of the art implementations
  Nominum products were written from the ground up using advanced software engineering practices along with rigorous testing to insure the products meet the quality standards
  required for supporting critical infrastructure services. Open source products typically have to contend with a wide quality range when incorporating contributions from the developer community.
  
• Driven by customer requirements
  Nominum's products, being driven by the needs of our customers, focuses on the critical requirements faced by organizations who depend on their name and address infrastructures to get their business done. We implement the functionality and security enhancements in the timeframe required by our customers. Other products are either driven by the personal opinions of individual implementors or by the pronouncements of standards organizations. In many cases, these products actually aren't driven as the companies and/or organizations providing the products have other priorities. Release schedules for these products are rarely documented, and when they are, those schedules are rarely met.
  
• Support
  Nominum products are backed by 7x24 support by talented engineers who pioneered DNS and DHCP and actively lead the advancement of Internet name and address technologies.