Sell IPv4 addresses

With IPv4 address supply depleted, and slow adoptation of the IPv6 address protocol, companies are still relying on the utilization of IPv4 address space to support their growth. If your company has unused IPv4 address blocks, now may be the right time to sell.


Prefixx works with buyers from all around the world, with a strong customer base in the U.S. and Europe. Our buyers primarily look for blocks ranging from /24 to /16


Step-by-step guidance and assistance is available. Let our team take care of your IPv4 diligence process, purchase agreements and escrow. Our goal is to provide a seamless customer experience.


Your funds will be safely held in an escrow for the duration of the process. All funds will be secured in full prior to the start of any transfer.

Looking to sell IPv4?

The IPv4 seller's market continues to be strong in 2022. The market has never been higher. If you have access to a supply of unused IPv4 addresses, now might be the right time to sell. Our company can help with IPv4 recovery of legacy blocks, correction of outdated organizational records and be your mediator and point of contact for any correspondence with the Regional Internet Registry (RIR).

Selling your IPv4 space can however be challenging. There are many requirements and they are different in every region. As a registered IP brokerage firm with RIPE NCC , APNIC and ARIN , Prefixx will help you identify buyers, prepare the necessary paperwork, walk you through all of the requirements and secure your transaction.

If you're not ready to sell, leasing might be a good option to monetize your IPv4 address space instead. Find out more about leasing IPv4 address space or

Contact us

Since 2007

There is no shortage of IPv4 brokers - Why Prefixx?

Our team has a proven track record in facilitating IPv4 transactions since 2007, with references available. Our boutique approach make us a perfect fit for companies looking to safely procure or divest IPv4 address space.

We would be happy to hop on an introductory call to tell you more about our team and the services here at Prefixx.

IPv4 Divestment Process

More often than not, companies that find themselves looking to sell IPv4 space have had unused space available to them for many years. In some cases due to mergers and acquisitions, in others simply due to excess inventory. Understanding the current status of your IPv4 address space and its eligibility for transfer is an important first step during any IPv4 divestment process. Be prepared; Prefixx has published basic guidelines and information about the IPv4 transfer process for the following scenarios:

Get Started

Our Standard of Excellence

Our team will assist you with every step in purchasing of or divesting of IPv4 address space. Take a look at our standard of excellence to learn more about our process and some of the benefits of working with Prefixx.

We'll help you tick the boxes!

Tixx by Prefixx

White-Glove Service

It is all in the details! The Prefixx experience will help you secure the missing pieces on your IPv4 journey. Our team offers geo location correction services, abuse complaint processing, reverse DNS and more. Find out more about our White-Glove Services:

Service Details

Frequently Asked Questions

How long has Prefixx been in business?

Prefixx has been operating in the data center and networking space since 2007. Our team of dedicated professionals has extensive experience working with the 5 different regional internet registries.

Why does IPv4 address space have value?

Experts have been warning about IPv4 exhaustion since the late '80s, but companies still heavily rely on IPv4 to reach many parts of the Internet today. As Regional Internet Registries (RIRs) started running out of allocable space, a commercial transfer market was created to help sustain the growth of IT-infrastructure around the world. The price/value per IPv4 address is entirely driven by its supply and demand.

Should I buy or lease?

CapEx or OpEx. If your company is looking to fill a temporary resource shortage of IPv4, or facilitate for a project with a fixed lifetime, leasing might be the better option for your company. Buying might be a better option if your company is looking to secure addresses that will be statically assigned for a longer period of time

How many IPv4 addresses are left ?

The allocable address pool managed by the 5 Regional Internet Registries (RIRs) has been fully exhausted. A lot of allocated space is however still not in use, which has opened up an opportunity for companies to offer their space up for transfer through the IPv4 transfer market

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