Skip to main content

Blog

  • ICANN Installs Root Server Cluster in Singapore

    I am pleased to update our community on the installation of an ICANN Managed Root Server (IMRS) cluster in Singapore. This new cluster will help to increase the root server capacity for the Asia Pacific region and bolster the resiliency of the entire Root Server System....
  • M3AAWG Appoints Dr. John Levine Liaison to ICANN

    The Messaging, Malware and Mobile Anti Abuse Working Group (M3AAWG) recently appointed Dr. John Levine Liaison to ICANN. The ICANN organization welcomes this appointment and thanks M3AAWG's Board of Directors for this decision. This appointment will allow the portion of...
  • KSK Rollover Operations Begin

    Hero1 ksk rollover operations 750x514 27oct16 en
    Today, ICANN created a new root zone key signing key (KSK). This new cryptographic public/private key pair was made during the quarterly Root KSK Ceremony at our secure key management facility in Culpeper, Virginia. With this key generation, the initial operational phase...
  • DNSSEC: Rolling the Root Zone Key Signing Key

    Hero1 ksk rollover 750x480 en
    ICANN today posted plans to update or "roll" the Root Zone Key Signing Key (KSK), marking another significant step in our ongoing efforts aimed at improving the security of the Domain Name System (DNS). The KSK rollover plans were developed by the Root Zone Management...
  • Changing the Keys to the Domain Name System (DNS) Root Zone

    Hero1 changing keys dns root zone 756x503 09may16 en
    Ensuring the Integrity of the top level of the DNS Through Security Best Practices In July 2010, ICANN, Verisign, and NTIA added a level of protection to the Internet's top DNS layer using a technology known as DNSSEC, which stands for Domain Name System Security...
  • Expectations of Service Level Expectations

    Introduction Recently, ICANN staff has been working to meet the community requirements related to establishing metrics for the performance of the "Post Transition IANA" as it processes root zone management requests. For those not following the development of the Service...
  • The Registration Operations Workshop: Join Us in Buenos Aires

    The next Registration Operations Workshop, the fourth of these events, will take place just before IETF-95 on Sunday, April 3, 2016, at the Hilton Hotel in Buenos Aires. The Registration Operations Workshop series is now being co-sponsored by Verisign and ICANN and...
  • New IANA Functions Resource Published

    ICANN is pleased to announce a new resource for the community: The IANA Functions: An Introduction to the Internet Assigned Numbers Authority (IANA) Functions [PDF, 2.17 MB]. As an overview of how the IANA Functions are currently executed, the 20-page booklet includes an...
  • Ghosts of Root Servers Past

    As noticed by some in the Internet network operations community, at the beginning of May an odd event occurred as ICANN ended DNS service on the IP address formerly associated with L.ROOT-SERVERS.NET (“L-root”). Specifically, as ICANN turned off the DNS service at the...
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""icann.org"" is not an IDN."