Summary
- Unrouted IPv4 space is a signal for investigation, not proof that an address block is idle, transferable or safe to lease.
- The economic opportunity appears only after organisations separate operationally required space from genuinely reclaimable inventory and test the latter against registry, routing, abuse and contractual obligations.
IPv4 scarcity has created an unusual corporate problem: infrastructure allocated years ago may now carry significant economic value even when nobody has established whether it remains operationally necessary.
The Research article cites a 2026 analysis indicating that about 23% of allocated IPv4 prefixes in the RIPE NCC region showed no BGP routing activity during a six-month period. That is an important signal, but it should not be converted directly into a market-size estimate. A prefix can disappear from public routing while remaining reserved for migration, recovery, private infrastructure, future expansion or another operational dependency.
The more useful conclusion is narrower. Organisations holding substantial IPv4 resources now have a reason to run the equivalent of an asset inventory: identify what is routed, what is assigned, what is contractually committed, what is strategically reserved and what can actually be reclaimed.
Only the last category becomes a candidate for monetisation.
The economics explain why that distinction matters. The Research article reports LARUS market figures of about $0.48 per address per month and estimated annualised returns of 12–16% for leasing strategies. Those figures describe a market opportunity, not a guaranteed return. Revenue can be reduced by vacancy, compliance work, abuse handling, routing operations, counterparty risk and the need to preserve recall flexibility.
Sale and leasing also solve different problems. Selling produces immediate liquidity but permanently removes the block from the holder’s available inventory. Leasing can preserve more optionality, but the registered holder can remain exposed to operational and policy obligations. In Africa, the Research article notes the absence of detailed AFRINIC leasing guidance and emphasises continuing holder accountability. That makes governance part of the asset decision rather than an administrative afterthought.
A practical portfolio therefore has at least three states: addresses required for current operations, addresses reserved for credible future needs, and addresses that have survived technical, legal and commercial review as deployable surplus. Treating all unrouted space as the third category would create a false balance sheet.
The near-term watchpoint is whether IPv4 holders begin measuring that distinction systematically. If scarcity continues while substantial legacy allocations remain underused, the organisations with the best audit trail—not simply the largest address holdings—will be best positioned to convert dormant capacity into income without surrendering operational control.
