How Hosting Providers Are Solving IPv4 Address Shortages

Hosting providers operate in a constrained environment: customers expect IPv4 addresses, but RIR free pools are exhausted. New servers, VPS instances, and dedicated hosting all require addresses. Here’s how providers are solving this fundamental constraint.

The Challenge

The math is simple but unforgiving. Every web host, VPS provider, and dedicated server company needs addresses to assign. Customers expect working IPv4 connectivity—IPv6-only isn’t viable for most commercial hosting. Yet providers can’t request new allocations from registries that have nothing to allocate.

This creates operational pressure: grow the business while managing a finite resource that only becomes more expensive over time.

Market Acquisition Strategies

Providers solve shortages through three main acquisition models:

Purchasing

Acquiring permanent ownership through RIR-registered transfer. The provider becomes the registered holder with full control.

Best for: Core infrastructure needs expected to last years. Larger providers often build a permanent base of owned addresses and supplement with other models.

Considerations: Higher upfront capital, but no ongoing payments after acquisition. Addresses become a balance sheet asset.

Leasing

Contract-based use rights for a defined period, typically 1-3 years. Lower upfront cost than purchasing, predictable monthly or annual payments.

Best for: Medium-term expansion, new product lines being validated, or situations where capital expenditure isn’t preferred.

Considerations: Ongoing costs, but preserved capital and flexibility to scale up or down at contract renewal.

Renting

Short-term, flexible arrangements—sometimes month-to-month. Our rental guide covers the process.

Best for: Burst capacity, specific campaigns, seasonal demand, or bridging gaps before permanent acquisition.

Considerations: Highest per-address cost, but maximum flexibility. No long-term commitment.

Most established providers use a combination: owned addresses for core capacity, leased addresses for growth, and rental for variable needs.

Efficiency Strategies

Market acquisition isn’t the only solution. Providers also reduce per-customer address consumption:

Shared Hosting Architecture

Many customers can share addresses behind reverse proxies and load balancers. A shared hosting server with 1,000 accounts might need just one or two public addresses rather than 1,000.

This is standard practice for most web hosting, though dedicated and VPS offerings still typically require per-instance addresses.

IPv6 Deployment

Deploying dual-stack infrastructure means some traffic uses IPv6 instead of IPv4. While this doesn’t eliminate IPv4 needs (most providers must offer both), it reduces pressure and positions for a future where IPv6-only becomes viable for more use cases.

Reclamation and Consolidation

Aggressive address recovery from churned customers and infrastructure consolidation frees space for new customers without additional acquisition. Good hygiene here is operationally essential.

NAT for Internal Infrastructure

Management interfaces, internal services, and non-customer-facing infrastructure can often use private addresses behind NAT, reserving public addresses for customer-facing needs.

Making Decisions

For hosting providers evaluating options:

Define your requirements. How many addresses, in which regions, for how long? This shapes which acquisition models make sense.

Get current market pricing. Address costs vary by region, block size, and reputation. Use a marketplace or broker to understand current rates for your specific needs.

Match model to use case. Rent for short-term flexibility (see our rental guide). Lease for medium-term predictability. Purchase for permanent infrastructure.

Compare total costs. Purchasing has high upfront cost but no ongoing payments. Leasing and rental have ongoing costs but preserve capital. Model your cash flows over relevant timeframes.

Invest in efficiency. Market acquisition costs money; efficiency improvements often have better ROI for the same effective capacity increase.

For detailed comparison of buying versus leasing, see our IPv4 Leasing vs Buying analysis.

The Path Forward

IPv4 scarcity isn’t going away. Hosting providers that build sustainable strategies—combining market acquisition with efficiency improvements—will have cost advantages over those that approach each constraint reactively.

The market is mature and liquid. Addresses are available for purchase, lease, or rental. The challenge isn’t finding supply; it’s managing cost and operations efficiently in a constrained environment.