Standfirst (20 words)

  • Despite IPv6 expansion, IPv4 scarcity, legacy systems and market demand mean IPv4 addresses continue to hold operational and economic value.

Introduction

For more than a decade, IPv6 has been promoted as the long-term answer to IPv4 exhaustion. With its vastly expanded address space, IPv6 was meant to eliminate scarcity from internet addressing altogether. Yet in 2026, IPv4 remains deeply embedded across global networks, cloud platforms and enterprise infrastructure.

While IPv6 adoption continues to increase, demand for IPv4 has not faded. Instead, IPv4 addresses have become scarce, tradable resources, increasingly treated as digital capital by enterprises. Service providers, cloud operators and IP management firms such as LARUS demonstrate how IPv4 still plays a central role in real-world infrastructure planning.

The question has shifted. It is no longer whether IPv6 will eventually dominate, but whether IPv4 demand will meaningfully decline — and if so, when.

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Why IPv6 adoption has not eliminated IPv4 demand

IPv6 adoption is real, but uneven. Major content platforms and mobile networks support IPv6, yet critical layers of the internet continue to rely on IPv4. Legacy systems, customer equipment, enterprise firewalls and software stacks often remain IPv4-dependent, making full migration costly and operationally risky.

For many organisations, IPv4 offers predictability. Routing behaviour, tooling and troubleshooting practices are well understood, while IPv6 expertise remains inconsistent across regions and teams. This encourages continued IPv4 usage wherever possible.

Even organisations that deploy IPv6 internally often require IPv4 externally. Dual-stack environments remain necessary to ensure universal reach and compatibility with customers, partners and legacy applications — sustaining IPv4 demand.

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Scarcity and market dynamics reinforce IPv4 value

The exhaustion of free IPv4 pools has fundamentally changed how addresses are perceived. IPv4 blocks are no longer freely allocated resources but scarce assets governed by transfer markets, leasing arrangements and regional policy frameworks.

This scarcity has driven the growth of secondary markets where IPv4 addresses are bought, sold and leased. Enterprises holding surplus IPv4 increasingly view it as a balance-sheet asset rather than dormant infrastructure. Leasing models, supported by providers such as LARUS, allow organisations to generate recurring revenue while retaining ownership.

IPv6, by contrast, lacks scarcity. Its abundance limits monetisation incentives, reinforcing IPv4’s unique position as both an operational necessity and an economic asset.

Case study: IPv4 demand in cloud and enterprise environments

Sustained IPv4 demand is especially visible during large-scale cloud migrations. As organisations move workloads to public cloud platforms, IPv4 — not compute or storage — often becomes the limiting resource.

In documented enterprise migration projects, companies consolidating on-premises infrastructure identified unused IPv4 blocks. Rather than abandoning IPv4, these organisations monetised surplus space through sales or leasing while retaining IPv4 capacity for hybrid environments and customer-facing services.

Cloud providers continue to charge premiums for IPv4 usage, reflecting ongoing scarcity. This pricing encourages optimisation, not elimination, reinforcing long-term demand even as IPv6 adoption expands.

Why IPv4 demand is likely to persist

Several structural factors suggest IPv4 demand will remain strong in the medium term:

  • Legacy dependence: Many applications and devices remain IPv4-only
  • Operational risk: IPv6 migration requires expertise and introduces transition risk
  • Global interoperability: IPv4 remains the lowest common denominator
  • Economic incentives: Scarcity supports leasing and resale markets

Rather than disappearing, IPv4 is increasingly treated as a premium, limited resource — used selectively and monetised strategically.

Conclusion

IPv6 is essential for the internet’s long-term growth, but it has not eliminated the need for IPv4. Instead, the two protocols coexist in a complex environment shaped by economics, operations and legacy realities.

For organisations managing IP resources, IPv4 should not be viewed as obsolete infrastructure, but as constrained digital capital. As long as compatibility requirements, legacy systems and economic incentives persist, IPv4 will continue to matter — even in an IPv6-enabled internet.