Requesting IP Addresses or ASNs

All resource requests require an ARIN Online account linked to either an Admin or Tech Point of Contact (POC) record with the authority to request resources for a valid Organization Identifier (Org ID).

IP Addresses

An Internet Protocol address (IP address) is a numerical label assigned to each device (e.g., computer, printer) participating in a computer network that uses the Internet Protocol for communication.

ISP Allocations

ARIN allocates blocks of IP addresses to Local Internet Registries (LIRs), which are generally Internet Service Providers (ISPs), for the purpose of reassigning that space to their customers. An ISP is an organization that provides Internet services to other organizations, its customers and/or individuals other than its employees. Internet services include, but are not limited to, connectivity services, web hosting services, colocation, dedicated servers, virtual private servers, virtual private networks, etc.

For policy information, see Number Resource Policy Manual (NRPM) Section 6.5.2.

For fee information, see ARIN’s Fee Schedule.

Initial Requests

Additional Requests

End User Allocations

An end user is an organization operates a network exclusively for its employees but does not provide Internet services to customers. ARIN allocates blocks of IP addresses to end users who request address space for their internal use in running their own networks, but not for sub-delegation of those addresses outside their organization. End users must meet the requirements described in these guidelines for justifying the allocation of an address block.

For policy information, see Number Resource Policy Manual (NRPM) Section 6.5.8.

For fee information, see ARIN’s Fee Schedule.

Initial Requests

Organizations meeting at least one of the above are eligible to receive the minimum initial assignment of a /48.

If requesting a block larger than the minimum assignment, provide documentation justifying the need for additional subnets based on the number of sites in the organization’s network within 12 months. Your initial assignment size will be determined by the number of justified sites your network has, for example:

• 2 - 12 sites: /44
• 13 - 192 sites: /40
• 193 - 3,072 sites: /36
• 3,073 - 49,152 sites: /32
• etc.

Additional Requests

Autonomous System Numbers (ASNs)

An Autonomous System (AS) is a group of one or more IP prefixes run by one or more network operators that maintains a single, clearly defined routing policy. An IP prefix is a list of IP addresses that can be reached from that ISP’s network. The network operators must have an ASN to control routing within their networks and to exchange routing information with other ISPs.

ASN Requests

If your ISP has informed your organization that you require an ASN, simply submit a request and ARIN will guide you through the rest of the process.

Experimental Allocations

Experimental Allocations are granted annually, on a lease/license basis, for a period of one year. Upon completion of any experimental activity, all allocated resources are returned to ARIN’s free pool, and must be requested again to reallocate. Allocation sizes should align with ARIN minimum allocation sizes, unless a smaller or larger allocation size is thoroughly justified for a particular experiment. ARIN reserves the right to modify or withdraw resources if they are being used for commercial purposes or other activities not documented in the experiment description provided to ARIN.

The policies governing Experimental Internet Resource Allocations can be found in NRPM 11. There are strict criteria to define recognized experimental activity:

• Objectives and practices are described in a publicly accessible document
• Outcomes will be published in a publicly accessible document
• Conditions for concluding the experiment are defined and included in the document
• Demonstration that the activity is technically coordinated

Submitting Your Request

To better understand how to use ARIN Online to submit a request, visit the Get Started page.

1. Log in to ARIN Online.
2. Select IP Addresses or ASNs from the navigation menu.
3. Select Request.
4. The subsequent windows guide you through your request.

An ARIN Customer Service Resource Analyst will review your request (typically within two business days) and reply to either approve your request or request more information. Once all requirements are met, ARIN will approve your request and ask that you pay any applicable fees and submit a signed Registration Services Agreement (RSA) within 60 days. Once ARIN receives a signed RSA and all applicable fees, your resources will be issued within two business days.

If you need a status update on your request or have any questions, please call ARIN Registration Services at 703.227.0660. If you need assistance with paying the registration fee or submitting a signed RSA, please call ARIN Financial Services at 703.227.9886.

Appeals

The Appeals Process allows organizations to appeal an ARIN decision regarding a number resource request if the organization believes that the community-established policies and procedures for the administration and management of Internet number resources were not adhered to.

Reissuing Returned, Revoked, and Reclaimed Resources

There are a number of ways that previously issued number resources can come back to ARIN. IP addresses or ASNs may be revoked for nonpayment of fees, they may be voluntarily returned by the holder, or they may be reclaimed by ARIN in instances of confirmed fraudulent activity or abandonment of resources.

All returned, revoked, and reclaimed IPv4 addresses are held for a period of 60 days prior to being reissued to allow adequate time for the resource to clear any route filters, and to allow an organization the opportunity to pay their overdue fees. This hold period was reduced as part of ARIN’s transition into Phase 4 of the IPv4 Countdown Plan.

ARIN will continue to hold IPv6 addresses and ASNs for six months prior to reissue.