IPv4 Exhaustion Explained: Why IP Addresses Cost $40-$60

Every IPv4 address on the internet costs between $40 and $60 to purchase today. That price was zero as recently as 2011, when the Internet Assigned Numbers Authority (IANA) distributed the last block of free addresses to regional registries. All five Regional Internet Registries (ARIN, RIPE NCC, APNIC, LACNIC, and AFRINIC) have since depleted their free pools. Businesses now buy or lease IPv4 addresses from a secondary market, where the supply is fixed, and demand continues to climb. At Atal Networks, we lease clean, BGP-ready IPv4 blocks from our owned IP pools, deployed globally in under 48 hours.

The Math Behind IPv4: A 4.3 Billion Address Pool That Could Never Scale

IPv4 uses a 32-bit addressing scheme. That arithmetic produces exactly 4,294,967,296 unique addresses, roughly 4.3 billion. In 1981, when the IETF published RFC 791 and formalized IPv4, only 43 networks existed worldwide. The address pool appeared inexhaustible.

The design reflected its era. Engineers allocated addresses in fixed classes. Class A blocks gave single organizations 16,777,216 addresses each. Universities, government agencies, and early technology companies claimed these blocks without any expectation of scarcity. MIT, Stanford, Apple, and Ford each still hold /8 blocks (16 million addresses apiece) from those early allocations. Millions of those addresses sit unused today.

By the late 1980s, the internet’s growth had already made engineers nervous. Two interventions bought critical time. Classless Inter-Domain Routing (CIDR), introduced in 1993, replaced classful addressing with variable-length prefix lengths, reclaiming billions of wasted addresses. Network Address Translation (NAT), formalized in RFC 1918 in 1996, let a single public IP address represent thousands of devices behind a private network. Your home router runs NAT right now, serving one public address to dozens of private ones.

Neither solution fixed the fundamental limit. CIDR reclaimed wasted space but did not create new space. NAT extended IPv4’s useful life by decades but did not expand the pool. The math always had one answer: 4.3 billion addresses for a world that now connects over 15 billion devices.

# Check your own IPv4 assignment

ip -4 addr show

# See your public IPv4 address

curl -s https://api.ipify.org

Five RIR Exhaustion Dates: A Timeline of the Global Shortage

Five Regional Internet Registries manage IPv4 allocation across geographic regions. Each one exhausted its free pool on a specific date, and the process unfolded over a decade.

RIR	Region	Free Pool Exhausted	Immediate Response
APNIC	Asia-Pacific	April 14, 2011	Capped new allocations at 1,024 IPs per member
RIPE NCC	Europe / Middle East	September 14, 2012	Activated waiting list; began address recycling
LACNIC	Latin America and the Caribbean	June 10, 2014	Retained emergency reserves only
ARIN	Norteamérica	September 24, 2015	Implemented needs-based justification for all transfers
AFRINIC	África	2020-2021	Governance challenges limit transfer activity

As of 2026, all five RIRs hold only minimal reserves dedicated to IPv6 transition support. The global allocated IPv4 pool sits at approximately 3.7 billion addresses distributed across registries. ARIN holds 45%, APNIC 24%, RIPE NCC 23%, LACNIC 5%, and AFRINIC 3%. The remaining unallocated pool is roughly 3.9 million addresses, concentrated in APNIC and AFRINIC. For practical purposes, the free pool is gone. Every IPv4 address in circulation today came from an organization that already held it.

RIPE NCC leads the secondary transfer market, processing 350 to 480 transfers per month through 2025. ARIN follows with monthly figures ranging from 140 to 640, depending on market conditions. Global transfer volume reached 8,062 transactions in 2025, one of the highest annual totals on record, confirming that lower per-address prices reflect new supply entering the market rather than declining demand.

How IPv4 Prices Went From Free to $40-$60 Per Address

IPv4 addresses traded at zero cost as long as RIRs had free pools to distribute. Once APNIC exhausted its pool in 2011, a secondary market formed. Prices rose steadily, peaked, corrected, and are now recovering.

Period	Purchase Price per IP	Key Driver
Pre-2011	~$0 from registries	Free pool available
2011-2015	$5-$10	APNIC and RIPE exhaust; secondary market forms
2018-2020	$20-$30	Steady cloud and mobile demand growth
2021-2022	$50-$65 peak	Post-pandemic digital acceleration
2022-2023	$30-$38	Market correction; institutional sellers enter
2024-2025	$35-$55	AI demand plus AWS IPv4 charge accelerates pricing
2026 (current)	$38-$58 (RIPE /24); $42-$58 (ARIN /24)	Recovery trend; 10-15% below 2021 peak

Block size drives significant pricing variation. Small blocks like a /24 (256 addresses) trade at a premium because they suit small and mid-sized operators without requiring massive capital. Large blocks like a /16 (65,536 addresses) trade at $18-$28 per IP because institutional sellers accepting bulk transactions accept lower per-unit pricing. A /24 at $50 per address represents a $12,800 upfront capital expenditure before registration fees, transfer documentation, and BGP configuration costs.

Regional pricing adds another layer. ARIN-registered addresses command a 5-15% premium over comparable RIPE NCC space, reflecting higher US cloud demand. APNIC-registered addresses have historically traded 10-20% below ARIN, though that gap is narrowing as Southeast Asian, Indian, and Pacific data center expansion accelerates demand. BGP routing reputation has become a standard part of transaction documentation for blocks above /22, as buyers now verify address history through third-party reputation services before committing capital.

Monthly lease rates sit at $0.30-$0.50 per IP for most ARIN and RIPE blocks. APNIC space runs above $0.60 per IP per month due to regional supply constraints.

NAT, CIDR, and CGNAT: Stopgaps That Could Not Fix the Problem

Every major mitigation strategy for IPv4 exhaustion extends the protocol’s functional life without solving the fundamental address shortage.

CIDR: Reclaiming Wasted Space

Classless Inter-Domain Routing replaced classful addressing by allowing variable-length subnet masks. An organization that once had to accept a Class B block (65,536 addresses) could receive exactly the subnet it needed. CIDR reclaimed billions of addresses that classful allocation wasted and bought years of additional capacity. It did not create new addresses.

NAT: How One IP Became Thousands of Private Addresses

Network Address Translation allows many devices to share a single public IP address by assigning private addresses internally and translating traffic at the router. RFC 1918 reserved three private ranges (10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16) for this purpose.

Your home network illustrates NAT exactly. One public IP address faces the internet. Every device on your network carries a private address. The router maps outbound connections and reverses the translation for responses.

# Your public IPv4 address (what the internet sees)

curl -s https://api.ipify.org

# Your private IPv4 address (behind the NAT)

ip route get 8.8.8.8 | awk ‘{print $7}’

NAT breaks end-to-end connectivity. Inbound connections cannot reach devices behind NAT without port forwarding rules. Real-time communications, P2P applications, VPN servers, and hosted services all require workarounds. Every workaround adds latency and complexity.

CGNAT: When ISPs Run NAT on Top of NAT

Carrier-Grade NAT takes the problem a layer deeper. ISPs assign private addresses to customers rather than public ones. A second NAT layer translates those private addresses to a shared pool of public IPs. Asia-Pacific ISPs have operated CGNAT since 2011, when APNIC ran out of free addresses.

CGNAT increases latency, breaks port forwarding completely, and makes hosting impossible from a residential or small business connection. Operators running hosting services, VPN servers, or proxy infrastructure need real public IP addresses, which is exactly what drives demand for IPv4 leasing.

The IPv4 Secondary Market: Leasing vs. Buying in 2026

Organizations that need IPv4 addresses in 2026 have two practical options: purchase through the transfer market or lease from a provider that owns IP pools.

Buying IPv4 Addresses

RIR-approved transfers move ownership of address blocks between organizations. ARIN requires needs-based justification, meaning buyers must demonstrate a legitimate routing purpose for the addresses. RIPE NCC operates an open market with no needs justification requirement, which drives higher transfer volumes in the European registry.

A /24 block (256 addresses) at current ARIN pricing costs $10,000-$15,000 in purchase price plus registration fees, legal transfer documentation, and BGP configuration costs. The address block becomes an owned asset on the balance sheet. Some organizations treat IPv4 blocks as investments since the addresses appreciated from $5 in 2012 to $65 at peak in 2022.

The downsides are significant: large upfront capital requirement, a multi-week transfer process, and ongoing RIR maintenance fees for holding the registration.

Leasing IPv4 Addresses

IP leasing delivers addresses under a monthly contract without capital expenditure. A quality lessor provides the Letter of Authorization (LOA), handles WHOIS and geolocation updates, configures BGP routing, and implements RPKI signing. The lessee routes the addresses on their own or on the lessor’s infrastructure.

Lease rates at $0.30-$0.50/IP/month mean a /24 block costs roughly $76-$128 per month. That compares directly to purchasing the same block for $12,800, a payback period of over 100 months, before leasing becomes more expensive than ownership at flat pricing.

Leasing suits businesses that need IPs for proxy operations, VPN services, hosting, or data operations without locking capital into an appreciating but illiquid asset. Scale up during growth phases and return addresses during contraction.

Atal Networks IPv4 Leasing: Clean IPs, Deployed in 48 Hours

We operate from owned IP pools with 10M+ IPs deployed globally and 10+ years of IP industry experience. Every lease includes LOA, route object, inetnum entry, and RPKI signing. Our support team (real engineers, not bots) stays available 24x7.

Subnet	IPs	Monthly Rate
/24	256	$150/mes
/23	512	$250/mes
/22	1,024	$480/mes
/21	2,048	$795/mes
/20	4,096	$1,600/mo
/19	8,192	$3,000/mo
/18	16,384	$6,500/mo
/17	32,768	$13,000/mo
IPv6 /48	—	$90/mes
IPv6 /32	64k /48s	$195/mes
Arrendamiento ASN	—	$150/mes

Lease IPv4 Now: atalnetworks.com/lease-ipv4-ipv6-asn/

Our three-step process: confirm your subnet and lease term, sign the contract and complete payment, then receive your LOA and full configuration details within 48 hours. Custom plans are available for high-volume requirements.

Businesses That Get Hit Hardest by IPv4 Exhaustion

The shortage creates operational problems across the industry, but some segments absorb more pressure than others.

Multi-tenant hosting firms face the sharpest pain. Running dozens or hundreds of customers through a shared IP pool means one abusive tenant (sending spam, running suspicious traffic) can blacklist an IP that harms every customer on that block. Dedicated, clean IP allocation per tenant requires address inventory that now costs real money.

ISPs in Asia-Pacific have operated under CGNAT since 2011. Their customers cannot host services, run VPN servers, or operate any application requiring inbound connections without purchasing dedicated IPs at a premium.

Cloud providers pass IPv4 costs directly to customers. AWS confirmed its $0.005/hr charge per public IPv4 in February 2024, translating immediately into higher costs for every application running public-facing endpoints. Those costs compound across thousands of instances.

Small businesses and startups feel the capital constraint most sharply. A /24 block at $50/IP requires $12,800 upfront, capital that early-stage companies rarely hold in reserve for infrastructure assets. Leasing converts that capital expenditure into a predictable monthly operating cost.

Geography determines severity. Central Asia, Asia-Pacific, and Africa face worse shortages and higher prices relative to their economies than North America and Western Europe. AFRINIC’s governance challenges have isolated African organizations from the global transfer market entirely, forcing them into informal arrangements or CGNAT.

IPv6: The Permanent Solution That Is Still Delayed

IPv6 uses 128-bit addressing. That produces 340 undecillion unique addresses (3.4 x 10^38), enough for every atom on Earth’s surface to carry its own IP. The standard was finalized in 1998, and deployment has been active for over two decades.

The technical case for IPv6 is solid. No NAT required. Better routing efficiency through simplified headers. Built-in IPsec support. Stateless address autoconfiguration removes the need for DHCP in many scenarios. Hierarchical addressing scales to the edges of the network.

# Check your IPv6 configuration

ip -6 addr show

# Test IPv6 connectivity

ping6 2606:4700:4700::1111

# Verify dual-stack support

curl -6 https://ipv6.google.com

As of 2025, Google reports that approximately 45% of traffic reaches its infrastructure over IPv6, up from near-zero in 2012. Most major content delivery networks and cloud providers support IPv6 natively. The barrier to adoption lies in organizational systems, not in the protocol itself.

Legacy hardware (routers, firewalls, load balancers) purchased before IPv6 was operationally required still runs on IPv4-only firmware. Replacing that hardware costs money. Dual-stack configuration, running IPv4 and IPv6 simultaneously, requires network engineers to manage two addressing schemes. In-house applications written against IPv4 socket APIs need audits and updates.

Every new server should support both protocols today, but full IPv4 replacement sits 10-20 years away at current adoption rates. IPv4 demand and prices will stay elevated throughout that transition period.

Practical Steps for Businesses Facing IPv4 Costs

Organizations can take concrete action to manage IPv4 costs without waiting for IPv6 to fully arrive.

Audit Your Existing IPv4 Utilization

Run a subnet scan to identify how many addresses in your current allocation are actively used versus sitting idle. Returning unused addresses to the transfer market generates revenue and reduces RIR holding fees.

# Scan a /24 to identify live hosts

nmap -sn 192.168.1.0/24

# Count responding hosts

nmap -sn 192.168.1.0/24 | grep -c “Host is up.”

Deploy IPv6 on Every New Server

Dual-stack configuration costs nothing extra on modern infrastructure. Deploying IPv6 on every new server reduces your IPv4 consumption growth without requiring a full migration of existing systems. Every Atal Networks server includes IPv6 support as standard.

Lease Instead of Buy

For businesses that need IPs for proxies, VPNs, hosting, or data operations, leasing converts a large capital expenditure into a predictable monthly operating cost. Our IPv4 leasing service deploys in 48 hours with full LOA and BGP configuration included.

Choose a Provider That Owns Its IP Pools

Before you order, our what is IPv4 leasing guide explains the full process, from LOA to BGP configuration, so you know exactly what to expect.

Resellers layer markup on top of underlying pool costs and often lack the technical control to handle reputation issues, BGP configuration changes, or geolocation corrections quickly. Providers that own their IP pools, like Atal Networks, deliver faster deployment, cleaner addresses, and transparent flat-rate pricing without hidden charges. Pair our IP leasing with our Servidores de metal desnudo for end-to-end infrastructure coverage.

Frequently Asked Questions About IPv4 Exhaustion

Is IPv4 actually exhausted, or are there still addresses available?

IPv4 address exhaustion has occurred at the registry level. All five RIRs (ARIN, RIPE NCC, APNIC, LACNIC, and AFRINIC) have depleted their free pools. Addresses still circulate through the secondary market because organizations buy, sell, and lease blocks they already own. No new IPv4 addresses can be obtained from registries. The total pool is fixed at 4,294,967,296 addresses, with approximately 3.9 million still formally unallocated, concentrated in APNIC and AFRINIC.

Why do IPv4 addresses cost $40 to $60 each?

The price reflects exhausted supply against sustained demand. RIRs stopped issuing free addresses between 2011 and 2021. Every organization that needs IPv4 today must acquire it from the secondary market. Prices climbed from $5 in 2012 to a peak of $65 in 2021-2022, corrected to $30-$38 in 2022-2023, and recovered to $38-$58 by 2026. AI infrastructure demand, delayed IPv6 migration, and persistent cloud growth sustain that price floor. Block size and regional registry also affect the per-address price: ARIN blocks command a premium over RIPE, and /24 blocks trade higher per IP than /16 blocks.

Is leasing IPv4 better than buying in 2026?

For most businesses, yes. A /24 block purchased at $50/IP costs $12,800 upfront plus transfer fees. The same /24 leased from Atal Networks costs $150 per month, a break-even of roughly 85 months at flat pricing. Leasing requires no upfront capital, deploys in 48 hours, includes LOA and BGP configuration, and scales up or down as requirements change. Purchasing makes sense for organizations with long-term, high-volume IP requirements, treating the block as a balance-sheet asset.

Will IPv6 make IPv4 obsolete?

Eventually, yes, though the timeline is long. IPv6 supports 3.4 x 10^38 addresses and has been technically ready since 1998. Adoption has reached roughly 45% of Google’s incoming traffic as of 2025, but full IPv4 replacement requires migrating legacy hardware, applications, and ISP infrastructure built on IPv4-only assumptions. Dual-stack operation (running both protocols simultaneously) is the standard architecture for the next decade. IPv4 prices will remain elevated throughout that transition.

What is a /24 block, and how many IP addresses does it contain?

A /24 is a subnet containing 256 IPv4 addresses, expressed in CIDR notation as x.x.x.0/24. At current purchase prices of $50 per IP, a /24 costs approximately $12,800 to buy. The same block leased from Atal Networks costs $150 per month, including LOA, route object, RPKI signing, and 24x7 support. Larger subnets like a /23 (512 IPs) or /22 (1,024 IPs) offer lower per-IP costs at higher total price points.

Can leased IPv4 addresses work for VPN, proxy, or email operations?

VPN and proxy operations work fully on leased IPv4. Atal Networks’ lease IPv4, IPv6, and ASN plans explicitly support both use cases. Email hosting requires additional configuration, including PTR records (reverse DNS), clean address reputation, and proper SPF/DKIM/DMARC setup, but clean leased addresses with proper configuration support email delivery. Our support team handles reverse DNS delegation and advises on reputation verification before deployment.

What is the IPv4 transfer market and how does it work?

The IPv4 transfer market is the secondary market where organizations buy and sell address blocks they already own. Transfers require RIR approval. ARIN requires buyers to demonstrate a legitimate routing need for the addresses (needs-based justification). RIPE NCC operates an open market with no needs justification requirement, which drives higher transfer volumes. Brokers facilitate large transactions, assist with documentation, and verify address reputation. RIPE NCC processes the highest transfer volumes globally, 350 to 480 per month through 2025.

Why did Asia-Pacific run out of IPv4 first?

APNIC exhausted its free pool on April 14, 2011, the first RIR to do so. Asia-Pacific experienced explosive internet growth through the 2000s, driven by billions of new users across China, India, Southeast Asia, and the Pacific. The region had received relatively smaller initial allocations during the classful addressing era, when most blocks went to US and European organizations. APNIC-registered addresses now trade 10-20% below comparable ARIN space, though that gap narrows as data center expansion in India, Indonesia, Vietnam, and the Philippines drives fresh regional demand.

About Our IPv4 Leasing Service

We built Atal Networks on the principle that infrastructure should be transparent, fast, and honest. Our IPv4 leasing service reflects that: flat monthly rates with no hidden charges, addresses deployed in 48 hours, and real engineers available around the clock. We own our IP pools with no reseller layers and no intermediaries. Every lease includes a Letter of Authorization, route object, inetnum entry, and RPKI signing.

Over 1,000 active clients in hosting, ISP, VPN, and SaaS trust us for their IP infrastructure. Our global network spans 213+ data centers across 196 countries, and our IP operations team has over 10 years of experience managing address allocations at scale. Read our what is IPv4 leasing guide to understand how the leasing process works before you order.

View IPv4 Leasing Plans: atalnetworks.com/lease-ipv4-ipv6-asn/