- Oversight. Provide oversight of the Internet architecture, protocols, procedures, and standards.
- RFC management. Provide editorial management and publication of the Request For Comments documents.
- IESG selection. Appoint the members of the Internet Engineering Steering Group, and the chair of the Internet Engineering Task Force.
- IETF oversight. Responsible for the IETF's relationships with other standards bodies and related organizations.
- IANA administration. Provide administration of the Internet Assigned Numbers Authority, which manages the various Internet numbers and parameters.
- The Address Supporting Organization (ASO) manages the IP address space and its allocation to various organizations. The ASO is supported by three existing Regional Internet Registries, APNIC, ARIN, and RIPE NCC.
- The Country Code Names Supporting Organization (CCNSO) is a policy development body responsible for developing consensus positions and recommending global policies relating to country-code top-level domain names.
- The Generic Names Supporting Organization (GSO) advises the ICANN Board with respect to policy issues relating to the Domain Name System.
- The Governmental Advisory Committee (GAC) provides advice to ICANN from governments on issues of public policy, such as where there may be interaction between ICANN's policies and national laws or international agreements.
- The ICANN At-Large Advisory Committee (ALAC) is responsible for providing advice to ICANN on issues that affect the interests of individual Internet users -- the "At-Large" community.