NeuStar Celebrates 10 Years of UltraDNS Managed DNS Service

Innovative Implementation of IP Anycast Now Accepted Industry Best Practice

STERLING, Va., June 10 /PRNewswire-FirstCall/ -- In 1999, Rodney Joffe -- now
senior vice president and senior technologist at NeuStar (NYSE: NSR) --
implemented the first large-scale commercial applications of IP Anycast for
DNS while at UltraDNS, the Reston, Virginia-based managed domain name services
company he founded. A decade later, in the wake of NeuStar's April 2006
acquisition of UltraDNS, this initiative has enabled NeuStar to build one of
the world's leading managed DNS services, renowned for performance,
reliability and security.

(Logo: http://www.newscom.com/cgi-bin/prnh/20080310/NEUSTARLOGO )

"In a network environment that is controlled by no single entity, NeuStar is a
critical intermediary," said Joffe. "By combining IP Anycast with Border
Gateway Protocol (BGP), NeuStar can provide its customers with what I consider
to be outstanding performance and security. This combination virtually
eliminates drops, and enables our network to redirect queries automatically
and instantly in the event of an outage. In addition, it defuses security
threats and Distributed Denial of Service (DDoS) attacks of every level of
severity, protecting our network at every turn. There is no substitute for
experience -- and over the past few years, we have seen and successfully
addressed almost every conceivable DNS failure scenario."

IP Anycast provides the ability to simultaneously advertise the same public IP
addresses from multiple machines in multiple locations. This capability is
usually combined with BGP, which is used at the edges of networks to route
packets of data along the most available and reliable paths. When combined
with IP Anycast, BGP may be used to route packets to the closest, most
available instance of a service such as DNS. In the event of a node outage,
BGP route announcements are automatically updated -- meaning that the address
for that node is withdrawn as a viable destination -- and traffic is
redirected to the next closest topological node. This allows for individual
nameservers or complete nodes to be removed from the pool of active systems
whenever unusual behavior is detected or key elements fail.

"Rodney's insight and early adoption of IP Anycast combined with BGP has led
to a dramatic improvement in the performance and security of the DNS
infrastructure, and hence the Internet," said Paul Vixie, president of ISC.
"This innovation made it easier for ISC to add similar functionality onto our
F-root nameservice globally, and benefitted the resilience of the
infrastructure as a whole."

IP Anycast is one of the foundational elements of managed DNS services.
NeuStar's UltraDNS Managed DNS Service is built on a global directory platform
consisting of strategically placed network nodes spanning five continents.
These nodes form an Oracle database-driven infrastructure that replicates
globally in near-real time, ensuring DNS requests are resolved with the very
latest data. Unlike infrastructure solutions offered by other providers, the
UltraDNS Managed DNS Service does not require new hardware or special
software. Today, NeuStar's intuitive web-based management portal offers
increased management control and functionality to thousands of managed DNS
customers worldwide, and all DNS changes are propagated globally in near-real
time.

"DNS is ideally suited to the use of an IP Anycast infrastructure because the
vast majority of DNS queries are sent using the User Datagram Protocol (UDP)
as their transport mechanism," said Steve Crocker, CEO of Shinkuro, Inc., a
start-up company focused on dynamic sharing of information across the
Internet. "UDP is a 'best-effort' protocol, and as such cannot guarantee
delivery. By using IP Anycast to bring the answer for a DNS query even closer
to the end user, it becomes far more likely that the query will reach its
destination and be responded to quickly. Rodney's innovation is now industry
best practice and a major contribution to the development of the Internet."

NeuStar was recently ranked #17 on Forbes Magazine's "25 Fastest Growing Tech
Companies" list for 2009.

About NeuStar
NeuStar (NYSE: NSR) provides market-leading and innovative services that
enable trusted communication across networks, applications, and enterprises
around the world. For more information, visit www.neustar.biz.

SOURCE NeuStar, Inc.

John Schneidawind of NeuStar, Inc., +1-571-434-5596,
john.schneidawind@NeuStar.biz