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New L-Root DNS Server Enhances DNS Fault Tolerance and Resistance to DDoS Attacks

A new instance of L-Root has been installed in Odessa, Ukraine, increasing the Domain Name System's (DNS) overall fault tolerance and its resilience against certain types of cyber threats, such as Distributed Denial of Service (DDoS) attacks.

The launch of the server node is a joint operation between ICANN and Ukrainian domain registry Hostmaster. DNS Root Servers form a key part of the Internet infrastructure that contribute to the global security and stability of the DNS.

"Odessa is one of the largest Ukrainian cities, with one of the highest Internet penetration rates in the country," said Dmitry Kohmanyuk, a Hostmaster official. "Moreover, the Internet provider we opted for has quality connections to Western Ukraine, which is precisely why we decided to deploy the node there."

Hostmaster, the Ukrainian administrator of the .UA domain, supplied the equipment necessary for the installation of the new L-Root node.

"In addition to the newest L-Root server in Odessa, two other L-Root nodes, in Kyiv and Kharkiv, were also deployed through collaboration between ICANN and Hostmaster." said Joe Abley, Director of DNS Operations at ICANN."

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Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as"""" is not an IDN."