Skip to main content

Joint Brazilian Network Information Center/ICANN Project Leads to Faster and Safer DNS Resolution in Brazil

The Brazilian Network Information Center (, in cooperation with ICANN has completed an improvement to the Internet infrastructure that increases the resilience to potential abuse or attacks on Domain Name Service (DNS) by boosting name resolution capacity. has installed 14 new anycast copies of ICANN's L-Root server, which were originally installed in California.

"This new infrastructure reduces response time in Brazil for domains from all over the world," said Frederico Neves, director of technology services at the "But its most relevant impact is greatly increasing security, by distributing international connectivity to the name resolution service independently and at the root of the Internet in the country."

As of today, L-Root copies operate together with .br servers at Internet Exchange Points (PTTMetro) across Brazil. Of the 20 current locations for those points, 14 will reap benefits from this latest infrastructure improvement.

"Root name servers are a critical part of the Internet's infrastructure," said Joe Abley, Director of ICANN's DNS Group. "These new servers distributed across Brazil are part of a global effort to improve DNS response time, security and general stability for all users."

More Announcements
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."