How an ISP should value IPv4 resources and intellectual property

IPv4 address holdings have become strategic financial assets for ISPs due to their scarcity. Address portfolios can be valued and optimized to generate leasing revenue, with prices ranging from $0.40 to $20 per address. Understanding the market dynamics is crucial for effective valuation and management of IP portfolios.

• “IP portfolio” is ambiguous. IPv4 and IPv6 prefixes and Autonomous System Numbers are Internet number resources; patents, trademarks, copyright and trade secrets are intellectual property. Spectrum, telecom licences and customer contracts are separate rights again.
• There is no universal price per address and a valuation is not automatic balance-sheet recognition. The answer depends on the legal interest, valuation date and purpose, RIR policy, operational use, transfer restrictions, evidence and scenario assumptions.

Define the portfolio before assigning value

Start with three schedules, not one spreadsheet headed “IP”. The first covers Internet number resources. IANA explains that IPv4 and IPv6 addresses are allocated hierarchically and that ASNs are used for routing. An ASN is therefore an identifier, not an address block, and cannot be valued by multiplying it by an IPv4 per-address figure.

The second schedule covers intellectual property: patents, trademarks, copyright in software and documentation, trade secrets, domain names and licences. Record the right, jurisdiction, registered owner, chain of assignment, encumbrances, licence scope, remaining legal life and renewal status. WIPO says a quantifiable IP asset should be identifiable, evidenced, enforceable and transferable; a name in an internal register is not enough.

The third schedule covers contractual and regulated positions such as spectrum authorisations, telecom licences, interconnection agreements, indefeasible rights of use, software licences and customer contracts. These may create economic benefit, but they are not patents or IPv4 resources merely because they are intangible.

Build a rights-and-use register for every prefix

For each IPv4 prefix record the RIR, registered holder, organisation identifier, allocation lineage, legacy status, registration agreement, receipt date, transfer history, sub-assignments and any lock. Reconcile RDAP or Whois data with corporate records, acquisition documents and the current legal entity. A registry record is important evidence of holdership; it should not be presented as universal legal title.

Add the operating evidence: addresses in use, DHCP or IPAM records, customer assignments, BGP announcements, IRR route objects, RPKI ROAs, reverse DNS, geolocation, abuse history and dependencies on hosting or transit contracts. “Unannounced” does not necessarily mean “surplus”, and a percentage utilisation threshold by itself does not prove that a block can be sold, leased or removed without renumbering.

Test transferability before applying a market multiple

Transfer rules differ by registry and resource history. ARIN policy says number resources are not sold under ARIN administration and a transfer requires ARIN approval; the recipient must sign the applicable agreement and meet operational-use rules. The RIPE policy allows permanent and non-permanent transfers, but scarce resources such as IPv4 and 16-bit ASNs generally face a 24-month restriction after receipt. APNIC conditions require recipient-use information and bar transfers of 103/8 resources for at least five years after the original delegation.

A lease is not the same transaction as a permanent registry transfer. Counsel should examine the RIR contract, governing law, bankruptcy and sanctions exposure, liens, change-of-control terms, customer assignments, recall obligations and whether the proposed use remains policy-compliant. Spectrum and telecom licences may require regulator consent; software, patents and trademarks may carry territorial or contractual restrictions.

State the valuation assignment

Document the purpose—M&A, tax, impairment, financing, internal planning or a proposed transfer—the valuation date, currency, basis of value, assumed buyer, unit of account and whether the estimate is enterprise-specific or market-entity based. Value prefixes individually or in homogeneous groups only when their rights, restrictions and operating characteristics support that grouping.

The market approach should use completed, verifiable transactions for comparable rights. Adjust for block size and aggregation, RIR, legacy and contractual status, transfer date, reputation, routability, operational disruption, fees and taxes. Broker asking prices, anonymous anecdotes and a global average are not substitutes for comparable transaction evidence.

Model income and cost without double counting

Under an income approach, forecast only cash flows attributable to the right being valued: avoided acquisition or renumbering costs, incremental service margin, or lease receipts where the arrangement is lawful and operationally feasible. Deduct registry and broker fees, remediation, routing and abuse risk, downtime, tax, readdressing, counterparty default and IPv6 migration costs, then discount scenario-weighted cash flows. For a patent or trademark, a relief-from-royalty or excess-earnings method may fit; it does not automatically fit an IPv4 prefix.

A cost approach can test replacement, reproduction, renumbering or migration expenditure, but may miss scarcity value. WIPO describes market, income and cost methods and stresses that price and value differ. Reconcile methods instead of choosing the highest result. Do not count the same customer margin in both enterprise goodwill and the address portfolio, or value an ASN, a prefix, a licence and a patent as if they were one asset.

Keep accounting conclusions separate

An economic valuation does not by itself make an item a financial asset, prove that an intangible asset can be recognised, or justify revaluation in the accounts. IAS 38 notes that active markets for intangible assets are uncommon and that unique rights such as patents and trademarks do not have an active market. Accounting treatment depends on the applicable standards, acquisition history, control and reliable measurement; obtain auditor and legal conclusions rather than importing a broker estimate into the balance sheet.

What a defensible report contains

The final work file should include a rights register, legal-transfer memo, operating dependency map, comparable-transaction table, normalised cash-flow model, cost cross-check, sensitivity ranges and reconciliation. It should identify what is observed, what is management representation and what remains uncertain. The decision is then traceable: retain for operations, transfer subject to approval, use under a documented temporary arrangement, or accelerate IPv6 and renumbering. No single unsupported per-address number can carry that decision.