Note: A report of number resources transferred per the requirements of Section 8.4 Inter-RIR Transfers to Specified Recipients or Section 8.3 Transfers to Specified Recipients is available on the Inter-RIR and Specified Transfers of Internet Number Resources page.
IPv4 address space and Autonomous System Numbers (ASNs) issued by ARIN or its predecessors may only be transferred to another organization under two circumstances:
- An organization acquires the assets that are using IPv4 addresses and/or ASNs in a currently operating network via a merger, acquisition, or similar transaction
- An organization with unused IPv4 address space or an ASN releases it to a specified recipient who qualifies for it under current ARIN policy
Transfer requests must meet the requirements of one of the two ARIN transfer policies listed below in order to receive approval. For basic information about the steps required to complete a transfer, please see ARIN’s Quick Guide to Transfers.
Organizations interested in acquiring unused IPv4 addresses, releasing unused IPv4 addresses, or brokering a transaction of unused IPv4 addresses should first read ARIN’s Guide to the IPv4 Marketplace.
Note: If your organization's name change was not due to a merger, acquisition, or other form of asset purchase, you may wish to review the Changing Your Organization Name section on the Organization Identifiers information page.
Merger & Acquisition (M&A) Transfers
If your organization acquired assets (such as customers and equipment) from another organization, and those assets are using IP addresses and/or ASNs that are directly registered through ARIN, you may request a transfer of those resources under section 8.2 of ARIN’s Number Resource Policy Manual (NRPM). You must provide documentation that shows the asset transfer and utilization information to demonstrate the resources are still justified under current ARIN policy.
For detailed information on completing an M&A Transfer, please see ARIN’s Instructions for M&A Transfers.
Specified Recipient Transfers
If your organization is the authorized registrant of unused IPv4 address space or an ASN that is directly registered through ARIN, you may release that number resource to ARIN to be transferred to a specified recipient under section 8.3 of the NRPM. The specified recipient must qualify to receive the resources under a current ARIN policy.
For detailed information on completing a Specified Recipient Transfer, please see ARIN’s Instructions for Specified Recipient Transfers.
If your organization is the authorized registrant of unused IPv4 address space that is registered in the ARIN database, you may release that space to ARIN to be transferred to another RIR for use by a specified recipient outside the ARIN region under section 8.4 of the NRPM. The receiving RIR recipient must have a documented, reciprocal inter-RIR transfer policy that allow transfers to and from its region; has an inter-RIR transfer policy that is compatible with, but not necessarily identical to ARIN's; and has general number resource policies that are needs-based, and the specified recipient must qualify under the policies of their RIR.
For detailed information on completing an Inter-RIR Transfer, please see ARIN's Instructions for Inter-RIR Transfers.
Please see the following article for a legal perspective on transfers within the ARIN region related to bankruptcy court proceedings.