IPv4 addresses are still in demand, years after the major registries exhausted their free pools. Networks keep growing, and many systems still need IPv4 to work reliably. That means buyers often have to acquire address space through the transfer market. The catch is that this market has real risks, including policy issues, blacklisted address space, payment fraud, and slow paperwork. A good broker helps you avoid those problems. A weak one can cost you money and uptime.

This guide gives you a plain checklist for choosing a trusted IPv4 broker. No heavy jargon, just the points that matter when you are spending real money and need the transfer to go smoothly.

Why IPv4 still matters in 2026

People have predicted the end of IPv4 for years, but it has not happened. IPv6 adoption keeps growing, and public measurements from Google passed the 50 percent IPv6 mark in 2026. That is an important milestone, but it still leaves a large share of traffic dependent on IPv4, often through shared address systems such as carrier-grade NAT.

The free pools are gone. ARIN’s general IPv4 free pool was officially depleted on September 24, 2015. RIPE NCC declared run-out on November 25, 2019, and now uses a limited waiting-list process for new allocations. ARIN runs a waiting list too, and distributions are limited. If you need address space soon, the transfer market is usually the practical path.

The market itself remains active. One Q1 2026 snapshot recorded 3.36 million addresses traded across 284 transactions, with an average price near $19.90 per IP. If you want more background on how prices have moved, this overview of 2025 IPv4 price trends offers useful context before you start shopping.

The hidden risks of going it alone

Buying address space without help can look simple until the details pile up. Each Regional Internet Registry, or RIR, has its own rules. ARIN, RIPE NCC, and APNIC each define who qualifies, how transfers work, and what paperwork they expect. Miss a requirement and your request can stall.

Address quality is another concern. A block may be listed on spam or abuse blacklists because of a prior owner. If you do not check first, your new addresses may struggle with email delivery or routing. Payment is also a risk. Wiring a large sum to an unknown seller with no protection is a poor safeguard. Finally, timelines slip. Transfers take weeks, not minutes, and a missed detail can stretch the process further.

What trustworthy IPv4 brokers do differently

Reliable brokers reduce friction at every step. Here is what to look for.

Policy fluency and pre-approval

A strong broker understands the registry rules that apply to your transfer. At ARIN, for example, recipients must meet NRPM 8.5 requirements, the policy section that covers needs-based transfers, and the minimum transfer size is a /24. A good broker helps you get pre-approved when required, so the registry has already reviewed your needs before you reserve a block.

Transparent inventory and pricing model

You should be able to see what is available, how the price is set, and what conditions apply before you commit. Marketplaces that publish listings and completed sale data make it easier to judge fair value. Be cautious with auction-only processes if your project needs a predictable budget or launch date.

Address-quality diligence

Reputation matters. A trustworthy broker checks blacklists, reviews routing history, and supports geolocation fixes when needed. The rule is simple: verify, do not assume. Ask for a current report on any block before you reserve it. No one can promise a block will stay clean forever, but you should at least know its current status.

Secure payments and escrow

Good brokers offer safe payment paths. That usually means wire transfer or ACH, plus the option of a third-party escrow service. Funds should be released only after the registry records have been updated, not before. This protects both buyer and seller.

Timeline accountability

Set realistic expectations. Transfers within the same registry often take a few weeks, while transfers between registries usually take longer. Ask your broker for a written checklist, expected milestones, and a named person who owns your ARIN, RIPE NCC, or APNIC ticket.

Post-transfer support

The deal does not end at payment. You may still need RPKI ROAs, IRR updates, BGP announcements, and geolocation corrections so your services work as expected. In plain terms, these records help other networks know who is allowed to route the address space. A broker that helps with these steps can prevent headaches after the transfer closes.

A quick vetting checklist

Use the same checklist whether you are speaking with an advisory broker, an auction platform, or a marketplace such as IPv4 Connect.

  • Can they show qualified facilitator status with the relevant registry, where that status applies?
  • Will they share a sample blacklist report for a real block?
  • Do they provide sample registration and escrow instructions up front?
  • Do they document KYC and AML steps, including identity and anti-fraud checks?
  • Can you contact real references, not just view logos on a page?
  • Do they explain registry timelines in writing?
  • Do they assign a named owner to your transfer ticket?
  • Do they help with pre-approval at ARIN and APNIC when required?
  • Do they support post-transfer tasks like ROAs and IRR updates?

An example marketplace to explore

If you want a concrete workflow to compare against, review a marketplace’s public buying process before you speak with a broker. IPv4 Connect, for example, shows browsable inventory, Buy Now options, subnet blacklist reporting, secure payment options, and managed transfers across ARIN, RIPE NCC, and APNIC. To see how that process is organized, you can browse IPv4 Connect and review the steps before starting a purchase.

IPv4 Connect states that accepted payment methods include wire transfer, ACH, checks, and Escrow.com. Buyers must be registered with their registry, and ARIN and APNIC buyers need pre-approval. Treat any marketplace’s public claims as a starting point for your own due diligence. Run your checklist against it the same way you would with any broker.

Solid alternatives to compare

It is smart to look at more than one broker so you can compare price, service, and fit. A few models worth reviewing include:

  • IPv4.Global: Offers auctions and fixed-price listings and publishes some past sales data for pricing context.
  • Prefix Broker: Emphasizes auction-free offers and experience with RIPE NCC and ARIN transfers.
  • Avenue4: Focuses on enterprise deal advisory and is an ARIN Qualified Facilitator, which can help with larger or more complex transactions.
  • IPTrading: A long-tenured broker with multi-registry experience.

Compare how each handles diligence, payment safety, and timelines, not just headline price. The cheapest block is no bargain if it arrives blacklisted or the transfer drags for months.

Buy, lease, or wait

You have three broad options, and the right one depends on your situation. Buying makes sense when you need addresses long term and want full control of the space. Leasing can work when you need addresses for a defined period or want to preserve cash, though you depend on the lessor’s standing. Waiting through a registry list is an option if you can be patient, but ARIN and RIPE NCC distributions are limited, so you may wait a long time for a smaller block.

Whatever you choose, keep your IPv6 plan moving in parallel. IPv4 solves today’s need. IPv6 is where more traffic is heading, and dual-stack support keeps your options open.

Conclusion

The IPv4 market is still active, and a good broker can be the difference between a smooth deal and an expensive mess. Before you commit, confirm that the broker understands your registry’s rules, offers safe payment with escrow, and will show you the address quality of any block. Use the checklist, compare a few providers, and set realistic timelines. That approach helps you acquire the space you need without blacklist, payment, or paperwork surprises slowing you down.

FAQs

How long does an IPv4 transfer usually take?

Same-registry transfers often take a few weeks. Inter-registry transfers can take longer because two registries must review the request.

Is leasing IPv4 space safer than buying?

Not always. Leasing can be flexible, but you depend on the lessor’s status and reputation. Review contracts and routing rights carefully.

What should I check before reserving a block?

Ask for current blacklist data, routing history, registry eligibility steps, payment terms, and post-transfer support before you commit funds.

Do I still need IPv6 if I buy IPv4?

Yes. IPv4 may solve a near-term need, but IPv6 growth continues. Keep dual-stack planning active.

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