Anycast Domain Name Service
Packet Clearing House operates the world’s first and largest DNS content delivery network, providing the Internet-using public with the quickest, most resilient DNS user-experience from our 139 locations on six continents. With more than 28 years of production anycast DNS experience, three of the root name server operators and more than 350 top-level domain registries using our infrastructure, and more than 120 million resource records in service, our DNS network is not only the largest and longest-established, but also the most widely trusted domain name service in the world. Because we focus on the core infrastructure of the Internet, we typically service only root and top-level domains, plus select critical-infrastructure domains, including the in-addr.arpa and ip6.arpa domains, the domains of Internet Exchange Points, CERTs, and national governments.
Among our 139 locations, we own and operate large installations of DNS servers at dozens of major Internet exchange points including those in Washington, Frankfurt, Amsterdam, London, Palo Alto, Tokyo, Singapore, Hong Kong, São Paulo, and Johannesburg. At the same time, we also operate smaller server clusters in many smaller countries in poorly-connected regions, where our services, unlike those of other DNS operators, remain available to local users during international connectivity disruptions.
In fulfillment of our not-for-profit mission, we provide this service on a pay-what-you-like basis to not-for-profit registries, at no cost whatsoever to developing-country ccTLD registries, and at competitive rates to commercial domain registries, including four of the world’s five largest Registry Service Providers.
Complementing our anycast DNS service, we also operate the world’s largest DNSSEC public signing service, and the only one which meets or exceeds the security of the DNS root itself. Using us for both anycast and DNSSEC gives domain operators a single point of contact, a single operator responsible for end-to-end DNS service delivery, and the assurance of complete interoperability between these services.