ICANN Acronyms and Terms

ICANN has hundreds of acronyms and terms, which can be confusing. We created this multilingual tool to help explain what these terms mean and facilitate your work within the ICANN community.

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ICANN Acronyms and Terms

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The segments that are separated by dot characters in a domain name. For example, the name gnso.icann.org consists of three labels: gnso, icann, and org. Each label in the name, when read from first to last, represents a subdomain of the label that follows it. For example, the labels in the name gnso.icann.org indicate that gnso is a subdomain of the icann domain, and icann is a subdomain of the org domain.

In the early days of the Domain Name System (DNS), labels could be composed only of characters from the Latin alphabet (a to z), European-Arabic digits (0 to 9), and the hyphen (-). The DNS now supports Internationalized Domain Names, which allow labels to include characters from other alphabets (e.g., Arabic and Cyrillic) and languages (e.g., Chinese, Japanese, Korean).

Label Generation Rules(LGR)

Algorithms used to determine whether, and under what conditions, a particular label is permitted within a zone of the Domain Name System. LGRs include a list of permissible code points and variant code point mappings, along with a set of rules that act on the code points and mappings. LGRs are included in the policies that zone managers establish for the zones they manage.

The terms Label Generation Rules and Internationalized Domain Name table are synonymous. The term Label Generation Rules is favored when rules are specified in Request for Comments (RFC) 7940 format.

Latin American and Caribbean Country Code Top-Level Domain Association(LACTLD)

A nonprofit association of country code top-level domain (ccTLD) registries in the Latin American and Caribbean region. LACTLD provides a forum where its members can discuss policy issues affecting the ccTLD registries in their region. The association also serves as a channel of communication between its membership and Internet governance bodies such as ICANN.

Latin American and Caribbean Islands Regional At-Large Organization(LACRALO)

The Regional At-Large Organization (RALO) that serves as the main forum and coordination point for public input to ICANN from the At-Large community in Latin America and the Caribbean. LACRALO keeps the At-Large Structures (ALSes) in its community informed about significant ICANN news. It also establishes mechanisms to facilitate two-way communication between the ALSes and ICANN policymakers, so ALS members can share their views on pending issues.

LDH label

A label that conforms to the hostname format defined in Request for Comments (RFC) 952, as modified by RFC 1123. LDH labels can consist of ASCII letters, digits, or hyphens. A hyphen must not occupy the first or last position of the label.

Limited Public Interest objection

In the New Generic Top-Level Domain Program (New gTLD Program), an objection made on the grounds that the applied-for gTLD string is contrary to generally accepted legal norms of morality and public order that are recognized under principles of international law.

Limited Registration Period(LRP)

In the New Generic Top-Level Domain Program (New gTLD Program), any registration period in which a registry operator (RO) imposes registration restrictions beyond the restrictions imposed by the gTLD’s general registration policy.

ROs can offer an LRP between the end of the Sunrise Period and the start of general registration. If an RO offers an LRP, all registrations during the LRP must be subject to the Claims Service in the same manner as registrations registered or allocated during the Trademark Claims Period.

local Internet community

Entities and individuals within the same geographic area who operate or use Internet services. Country code top-level domains are delegated to sponsoring organizations from local Internet communities to operate the domains in the best interests of this community.