IPv4 Is Running Out: What That Means for Your Business Website
It sounds almost too basic to be true: the internet is running out of addresses. But it’s real, it’s been unfolding for over a decade, and it’s quietly reshaping decisions across the hosting industry — even if most business owners have never heard about it. Understanding the IPv4 address shortage and its business impact helps explain a shift that will affect how infrastructure gets built for years to come.
Why the Internet Is Running Out of Addresses
Every device connected to the internet needs an IP address — think of it as a postal address for data. The original addressing system, IPv4, was designed decades ago and allows for roughly 4.3 billion unique addresses. That sounded like an enormous number at the time. It isn’t anymore.
Between the explosive growth of internet-connected devices, cloud infrastructure, mobile devices, and IoT — smart devices, sensors, connected appliances — the supply of available IPv4 addresses has been steadily exhausted. Regional internet registries, the organizations responsible for allocating IP addresses, have already run through their primary supply of IPv4 addresses in most parts of the world, forcing a shift toward smaller, recycled address blocks and, increasingly, a completely different addressing system: IPv6.
What This Actually Means for a Business
For most businesses, the IPv4 shortage shows up in a few concrete ways:
Rising costs for IPv4 addresses. As available supply shrinks, the cost of acquiring dedicated IPv4 addresses has risen steadily. Some hosting providers now charge separately for dedicated IPv4 addresses, where they were once bundled in by default.
Reduced availability of dedicated IPs. Some providers are moving toward shared IPv4 addressing by default, reserving dedicated addresses for premium plans or additional cost, specifically because the underlying supply is limited.
A push toward IPv6 adoption. IPv6 was designed specifically to solve the exhaustion problem — its address space is vastly larger, effectively eliminating the scarcity issue. But IPv6 isn’t universally supported across every network and device yet, which creates a real transition challenge.
Why Dual-Stack Support Is the Practical Answer
This is where dual-stack support becomes relevant. A dual-stack setup means infrastructure supports both IPv4 and IPv6 simultaneously, rather than forcing a choice between them. This matters because the internet is currently in a long transition period — some visitors, networks, and services still rely primarily on IPv4, while adoption of IPv6 continues to grow steadily.
A business running dual-stack infrastructure is protected on both sides of this transition: reachable by visitors and services still using IPv4 today, while also being properly configured for IPv6 as adoption continues to increase. Businesses running IPv4-only infrastructure risk future compatibility issues as IPv6 adoption grows; businesses running IPv6-only infrastructure risk cutting off users and services still on IPv4 today.
What to Check With Your Hosting Provider
- Does your hosting plan include dual-stack IPv4/IPv6 support by default, or is IPv6 a separate configuration step?
- If dedicated IPv4 addresses matter for your business (for email sending reputation, compliance, or specific integrations), is that included, or an additional cost?
- Is your provider actively planning for continued IPv4 scarcity, or treating it as someone else’s problem?
VyomCloud’s infrastructure includes IPv4/IPv6 dual-stack support across our VPS hosting and dedicated server plans, so businesses don’t have to choose between compatibility today and readiness for where the internet is heading.
The Practical Takeaway
The IPv4 shortage isn’t an abstract technical debate — it’s a resource constraint with real, ongoing consequences for cost, availability, and long-term compatibility. Businesses don’t need to become networking experts to navigate it. They just need infrastructure that’s already built for both sides of the transition, so the industry-wide shift toward IPv6 happens in the background, rather than becoming a business-disrupting migration project down the line.
Frequently Asked Questions
- Has the world actually run out of IPv4 addresses? Regional internet registries have exhausted their primary supply in most regions, forcing reliance on smaller recycled blocks and driving up costs for remaining IPv4 addresses.
- What is dual-stack hosting? Dual-stack means infrastructure supports both IPv4 and IPv6 simultaneously, ensuring compatibility with visitors and services using either addressing system during the ongoing transition.
- Will my website stop working if I don’t switch to IPv6? Not immediately — IPv4 remains widely supported, but as IPv6 adoption grows, IPv4-only infrastructure may eventually face compatibility or cost-related challenges.
- Does switching to IPv6 improve website performance? Not directly for most use cases — the main benefit of IPv6 is addressing scarcity and long-term compatibility, not raw speed improvements.
- Why do some hosting providers charge extra for dedicated IPv4 addresses? Because available IPv4 supply is limited and costly to acquire, providers increasingly pass that scarcity-driven cost onto customers requesting dedicated addresses.
- Is IPv6 adoption actually growing significantly? Yes — IPv6 adoption has been steadily increasing globally for years, though a large share of internet traffic still relies on IPv4, making dual-stack support the practical choice today.
