For organisations that need additional IPv4 address space, joining the ARIN IPv4 Waiting List may seem like an attractive option. Unlike purchasing or leasing IPv4 resources on the secondary market, the waitlist allows eligible organisations to receive returned IPv4 addresses when they become available. The challenge is that there is no guaranteed approval or allocation timeline.
If you are researching the ARIN waitlist timeline, it is important to understand how the process works and why the time between joining the waiting list and actually receiving IPv4 resources can vary significantly. Rather than offering fixed delivery dates, ARIN allocates addresses only when suitable blocks become available and requests are next in line under current policy.
As of September 2026, ARIN does not publish an official expected waiting time for IPv4 Waiting List requests. Instead, requests are fulfilled as returned or revoked address space becomes available, according to policy requirements and the order of approved requests.
Why There Is No Fixed Wait Time
Unlike a traditional application queue, the ARIN Waiting List depends entirely on IPv4 blocks becoming available again.
Most address space distributed through the waiting list comes from:
- Returned address space
- Revoked resources
- Registration clean-up activities
- Recovered legacy allocations
Because ARIN cannot predict when or what size blocks will become available, it cannot publish a guaranteed allocation timeline.
What Determines How Long You Wait?
Several factors influence how quickly a request may be fulfilled.
Block Size Requested
The maximum approved block size affects whether a newly available block can satisfy your request.
Under current ARIN policy:
- The largest aggregate allocation available through the waiting list is /22.
- Applicants may specify a smaller minimum acceptable block size.
- Greater flexibility may increase the chances of receiving available address space sooner.
Position on the Waiting List
Requests are added after ARIN approves eligibility.
When suitable address space becomes available, allocations are made based on approved waiting list order and block availability, not simply calendar time.
Available Returned Address Space
The waiting list only moves forward when ARIN receives address blocks that can be redistributed.
This means activity varies throughout the year rather than progressing at a constant rate.
How Often Does ARIN Make Waiting List Distributions?
ARIN periodically announces waiting list distributions after completing allocations from newly available IPv4 resources.
For example:
- A waiting list distribution was completed on 2 July 2026.
- ARIN announced the next distribution would occur on or about 1 October 2026, subject to available inventory.
These periodic distributions should not be interpreted as guaranteed approval dates. They simply represent occasions when eligible waiting list requests are fulfilled using available address space.
Does ARIN Publish Estimated Wait Times?
No.
As of September 2026, ARIN does not publish estimated waiting periods measured in months or years.
The official waiting list documentation explains the allocation process but deliberately avoids forecasting individual request timelines because they depend on factors outside ARIN's control.
While independent community projects sometimes estimate waiting periods based on historical data, those estimates are unofficial and should not be treated as guarantees.
Who Can Join the Waiting List?
Eligibility is governed by ARIN's Number Resource Policy Manual (NRPM).
Current key requirements include:
- Demonstrated need for IPv4 resources
- Eligibility under ARIN policy
- No more than a /20 equivalent of existing IPv4 holdings (excluding certain special allocations)
- One active waiting list request per organisation
- Maximum approved request size of /22
Applicants should always review the latest ARIN policies before submitting a request.
Why Many Organisations Lease While Waiting
Because waiting periods cannot be predicted, many organisations choose to lease IPv4 resources while remaining on the ARIN Waiting List.
Leasing allows businesses to:
- Deploy infrastructure immediately
- Avoid delaying customer projects
- Expand cloud environments
- Support hosting services
- Maintain predictable operational timelines
If an organisation later receives IPv4 resources through the ARIN Waiting List, it can adjust its long-term addressing strategy accordingly.
Planning Around an Uncertain Timeline
Businesses should avoid building infrastructure plans around an unknown allocation date.
Instead, many organisations:
- Submit an ARIN waiting list request.
- Continue infrastructure growth through leased IPv4 resources.
- Evaluate permanent transfers if long-term ownership is required.
- Expand IPv6 deployment where appropriate.
This approach allows projects to continue without depending on uncertain waitlist timing.
Best Practices Before Joining the Waitlist
Before submitting a request:
- Review current ARIN eligibility requirements.
- Determine the smallest acceptable prefix size.
- Prepare justification documentation.
- Confirm organisational contact information.
- Understand alternative acquisition options.
- Develop a contingency plan if allocation is delayed.
Preparation helps reduce processing delays during the application review stage.
Common Misunderstandings
Several misconceptions frequently arise regarding the waiting list.
These include:
- Assuming approval guarantees immediate allocation.
- Expecting a published average wait time.
- Believing every distribution fulfils every request.
- Assuming larger requests move as quickly as smaller ones.
- Planning infrastructure around estimated dates instead of actual allocations.
Understanding how the waiting list operates helps organisations make more realistic deployment decisions.
Planning for IPv4 Growth
The ARIN Waiting List remains an important option for organisations that qualify under current policy, but it should be viewed as a long-term opportunity rather than a predictable procurement method. Because ARIN does not publish guaranteed allocation timelines, organisations with immediate infrastructure requirements often combine a waiting list application with leased IPv4 resources or other approved acquisition methods.
Monitoring official ARIN announcements and maintaining flexible infrastructure plans will help organisations adapt as address space becomes available. For the latest waiting list information, always consult the official ARIN Waiting List documentation.
About IPv4Hub
IPv4Hub is a trusted marketplace where organisations can lease, buy, and sell IPv4 address resources through a secure and transparent platform. For businesses that cannot wait for uncertain IPv4 allocations, IPv4Hub provides verified inventory, transparent pricing, structured onboarding, and efficient provisioning workflows that support immediate infrastructure growth. Combined with IP intelligence, blacklist screening, registry-aware processes, and expert guidance, IPv4Hub helps organisations acquire high-quality IPv4 resources while continuing to pursue long-term addressing strategies such as the ARIN Waiting List.
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