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IANA

The Internet Assigned Numbers Authority (IANA) is responsible for the global coordination of the DNS Root, IP addressing, and other Internet protocol resources. Following the IANA Stewardship Transition in 2016, the IANA function is carried out by Public Technical Identifiers (PTI), a purpose-built organisation wholly owned by ICANN.

With regard to Internet number resources, IANA's role is to allocate IP addresses and AS Numbers from the pools of unallocated resources to the Regional Internet Registries (RIRs) according to their needs, and to document protocol assignments made by the IETF. When an RIR requires more IP addresses for allocation or assignment within its region, IANA makes an additional allocation to the RIR. The five Regional Internet Registries have a Service Level Agreement with ICANN regarding provision of those IANA functions relating to Internet number resources (IP addresses and AS Numbers).

IANA does not make allocations directly to ISPs or End Users except in specific circumstances, such as allocations of multicast addresses or other protocol-specific needs.

Global Policy Development

The policies under which the IANA role is carried out are referred to as Global Addressing Policies, and must be agreed to by all of the five RIR communities. Any new policy proposal must go through the Policy Development Process in each RIR and be ratified by each community, and this process will then be reviewed by the ASO Address Council (ASO AC) before the new global policy is adopted.

More information:

IANA News

  • Publications / News
    RIPE NCC Receives /12 IPv6 Allocation From IANA

    On 5 June 2019, the RIPE NCC received the following IPv6 allocation from IANA: 2a10:0000::/12

    NewsItem iana world ipv6 day ipv6 news
  • Publications / News
    RIPE NCC Receives IPv6 Allocation from IANA

    The RIPE NCC received the following IPv6 allocation from IANA on 13 March 2019: 2001:3c00::/22 In 2004, IANA reserved this block for possible future allocation to the RIPE NCC. We requested this specific prefix because it completes a block previously allocated to the RIPE NCC:

    NewsItem iana ipv6 news
  • Publications / News
    RIPE NCC Receives /23 from IANA's Recovered Pool

    On 1 March 2019, the RIPE NCC and the other Regional Internet Registries (RIRs) were each allocated the equivalent of a /23 of IPv4 address space from the Internet Assigned Numbers Authority (IANA).

    NewsItem iana ipv4 ipv4 depletion news
  • Publications / News
    RIPE NCC Receives /22 from IANA's Recovered Pool

    On 4 September 2018, the RIPE NCC and the other Regional Internet Registries (RIRs) were each allocated the equivalent of a /22 of IPv4 address space from the Internet Assigned Numbers Authority (IANA).

    NewsItem iana ipv4 ipv4 depletion news
  • Publications / News
    RIPE NCC Receives /21 from IANA's Recovered Pool

    On 1 March 2018, the RIPE NCC and other Regional Internet Registries (RIRs) were each allocated the equivalent of a /21 of IPv4 address space from the Internet Assigned Numbers Authority (IANA).

    NewsItem iana ipv4 ipv4 depletion news