IPv6 Adoption Impact on IPv4 Address Value: Key Trends

IPv6 Adoption and IPv4 Market Dynamics

The impact of IPv6 adoption on the value of IPv4 addresses is not a minor issue. In fact, I keep it in mind during every network planning session. IPv4 addresses are running out, we all know that. The RIRs confirm it: there are no new blocks left, only transfers. And that, of course, affects prices.

Google reports that over 40% of global users already access its services via IPv6 in 2025. But not everyone is moving at the same pace. Asia and Africa still depend on IPv4 due to costs and legacy infrastructure. This creates a dual-stack environment where IPv4 remains in demand. I have seen companies that sold their blocks too early regret it later.

The effect is twofold: on one hand, the need for new IPv4 allocations is reduced, but on the other, existing blocks become more valuable. For ISPs and enterprises, having IPv4 remains a strategic asset, especially for content delivery and legacy systems. IP4 Market offers a reliable platform to buy and sell, with verified sellers and competitive pricing.

How IPv6 Adoption Influences IPv4 Prices

Market data shows that IPv4 prices have remained firm, despite the growth of IPv6. The average price per address in a /24 has hovered around $25–$35 in recent years. Larger blocks, such as /16s, carry a premium. Here is a table showing the evolution:

This decline is not solely due to IPv6. The economy, transfer regulations, and the boom in IPv4 leasing also play a role. Leasing is gaining traction: it costs between $0.50 and $1.00 per address per month.

The key here is that IPv6 reduces long-term demand, but it does not eliminate it. Many organizations maintain dual-stack networks, requiring IPv4 for backward compatibility. This puts a floor on prices, as seen in the leasing market. IP4 Market facilitates both sales and leases, providing liquidity.

Regional Variations in the Impact of IPv6

The situation in Europe is not the same as in Africa. In Europe and North America, where IPv6 exceeds 50%, IPv4 prices have dropped slightly. In Asia-Pacific and Africa, with adoption below 20%, prices are higher because demand remains strong. Engineers should monitor RIR policies, as some regions restrict transfers.

For example, AFRINIC has strict policies, limiting supply and sustaining prices. ARIN allows more flexible transfers, creating a more liquid market. So, the impact varies depending on where you are located.

Practical Strategies for Network Engineers

For those managing networks, understanding how IPv6 affects IPv4 is key to asset management. Here are some tips:

• Audit your IPv4 inventory: identify unused or underutilized blocks. Selling or leasing them can generate revenue, especially on platforms like IP4 Market. I always recommend auditing before making decisions. Once, a client discovered they had a nearly unused /16; they were able to lease it and pay a year’s bandwidth bill.
• Dual-stack planning: ensure your network supports both protocols to maintain flexibility. This mitigates risks from price volatility.
• Lease instead of buying: for short-term needs, leasing is cost-effective. IP4 Market offers verified sellers with competitive rates.
• Monitor RIR policies: stay up to date on transfer rules in your region. Some registries require justification, which can delay transactions.

Case Study: An ISP That Migrated to IPv6

Consider a medium-sized ISP in Europe that adopted IPv6 in 2022. It sold 30% of its IPv4 blocks and used the proceeds to finance infrastructure upgrades. The impact of IPv6 allowed them to monetize what they no longer needed. They optimized their balance sheet and reduced operational costs. This is not a rare case.

On the other hand, a company in Asia preferred to keep its IPv4 for customer services, because IPv6 has not yet taken off. They leased the unused addresses and generated passive income. Two sides of the same coin.

What’s Next and How to Prepare

The impact of IPv6 on the value of IPv4 will continue to change. When IPv6 adoption reaches 60-70% in developed markets, IPv4 prices could drop further, but they will not plummet. Residual demand from legacy systems, IoT, and content delivery networks ensures a base value.

Looking ahead, engineers should plan for a hybrid environment. IPv4 addresses will remain valuable for at least another decade, especially for multinational operations. I do not believe prices will crash, but we must stay alert. Key predictions:

• Stable prices for small blocks: /24 and /22 will retain value due to their utility for NAT and VPNs.
• Leasing growth: the leasing market will expand as organizations avoid large capital expenditures.
• Increased regulation: RIRs could impose stricter transfer rules, potentially increasing scarcity.

To navigate this landscape, consider using IP4 Market for transparent transactions. Its platform guarantees verified sellers, competitive pricing, and expert support. Personally, I have used their valuation tool and found it useful. Whether you buy, sell, or lease, the impact of IPv6 on the value of IPv4 demands informed decisions.