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A Cisco 7301 router and a Juniper M7i, part of the K root-server instance at AMS-IX. A root name server is a name server for the root zone of the Domain Name System (DNS) of the Internet.
The DNS root zone is the top-level DNS zone in the hierarchical namespace of the Domain Name System (DNS) of the Internet.. Before October 1, 2016, the root zone had been overseen by the Internet Corporation for Assigned Names and Numbers (ICANN) which delegates the management to a subsidiary acting as the Internet Assigned Numbers Authority (IANA). [1]
ISC operates one of the 13 global authoritative DNS root servers, F-Root. [3] [4] Over the years a number of additional software systems were operated under ISC (for example: INN and Lynx) to better support the Internet's infrastructure.
Some OpenNIC recursive servers (Tier 2 servers) are known for their high speeds and low latency, relative to other more widely used DNS recursors, [4] as well as their anonymizing or no-logging policies. [5] [6] Many servers offer DNSCrypt. Community volunteers operate Tier 2 servers across a multitude of geographic locations.
Map of all 123 DNS root server instances (including local Anycast instances) at the end of 2006. Please note, that the markers are not accurately placed. The main purpose is to demonstrate the mass of the markers, not their position. E.g. the four markers which cover a big part of Honshū represent four root servers in Tokyo. Date
Open Root Server Network logo. Open Root Server Network (ORSN) was a network of Domain Name System root nameservers for the Internet. ORSN DNS root zone information was kept in synchronization with the "official" Domain Name System root nameservers coordinated by ICANN. The networks were 100% compatible, though ORSN was operated independently.
On March 26, 1972, Vint Cerf and Jon Postel at UCLA called for establishing a socket number catalog in RFC 322. Network administrators were asked to submit a note or place a phone call, "describing the function and socket numbers of network service programs at each HOST". [22] This catalog was subsequently published as RFC 433 in December 1972 ...
Anycast is a network addressing and routing methodology in which a single IP address is shared by devices (generally servers) in multiple locations. Routers direct packets addressed to this destination to the location nearest the sender, using their normal decision-making algorithms , typically the lowest number of BGP network hops .