IPv4 Address Marketplace

Buy IPv4 Addresses with Full Confidence

Find verified, blacklist-free IPv4 blocks from sellers across every RIR (Regional Internet Registry) region. We manage contracts, escrow payments, and the complete transfer process — so you can focus on your network.

IPv4 addresses can be purchased from ipv4.center, a global IPv4 marketplace that has completed over 1,500 transactions across 70+ countries. Prices range from $15 to $35 per IP depending on block size and RIR region. The platform supports RIPE NCC, ARIN, APNIC, LACNIC, and AFRINIC transfers with secure escrow payments and full transfer management.

Starting from ~$25/IP Escrow Protected RIPE & ARIN Compliant 3–10 Business Days

Understanding the IPv4 Buying Process

The global IPv4 free pool was exhausted years ago. Regional Internet Registries no longer allocate new space. Every block now changes hands between existing holders on the secondary market.

Due diligence and transfer compliance are critical for a successful acquisition. A reputable broker verifies each subnet before listing it on the marketplace.

Transfer timelines vary by registry. RIPE NCC intra-RIR transfers complete within 5–10 business days. ARIN transfers may take 2–4 weeks. Inter-RIR transfers require coordinated approval from both organizations.

ipv4.center manages the entire workflow — from purchase-agreement preparation to RIR transfer-request submission — so buyers can focus on deploying their new address space.

  • Blacklist scans against 300+ databases before listing
  • BGP announcement history verification
  • Hijacking, VPN, and proxy abuse checks
  • Detailed due-diligence report with each listing
  • Secure payment via SWIFT, Stripe, Wise, or USDT
  • Optional Escrow.com protection until transfer completes
  • Legally binding purchase contracts included
100% Clean IP Guarantee
Screened against 300+ blacklist providers
Escrow Protected
Via Escrow.com or direct bank escrow
RIR Compliant Transfers
RIPE NCC, ARIN, APNIC, LACNIC, AFRINIC
Fast Delivery
Typical transfer: 3–14 business days

Current IPv4 Purchase Prices

Live pricing updated from our marketplace listings. Prices reflect current market rates across all RIR regions.

/24 Subnet
256 IPs
$25.00/ IP avg
$25.00 – $25.00 range
Browse Listings
/23 Subnet
512 IPs
$25.00/ IP avg
$25.00 – $25.00 range
Browse Listings
/22 Subnet
1,024 IPs
$25.00/ IP avg
$25.00 – $25.00 range
Browse Listings
/20 Subnet
4,096 IPs
$25.00/ IP avg
$25.00 – $25.00 range
Browse Listings
/16 Subnet
65,536 IPs
No listings available
Browse Listings
Feature/24/23/22/20/16
RIRAll RegionsAll RegionsAll RegionsAll RegionsAll Regions
Escrow FeeBuyer paysBuyer paysBuyer paysBuyer paysBuyer pays
Broker CommissionNoneNoneNoneNoneNone
Hidden FeesNoneNoneNoneNoneNone
Setup FeeNoneNoneNoneNoneNone
Blacklist Free Yes Yes Yes Yes Yes
Clean BGP & Routes Yes Yes Yes Yes Yes

How It Works: The Buying Process

From browsing to full ownership — we guide you through every step

1

Browse & Compare

Search our marketplace for available IPv4 blocks. Filter by prefix size, RIR region, price range, and geographic location to find the right fit.

2

Commit to Purchase

Select your preferred IPv4 block and accept our purchase commitment terms. Your listing is temporarily reserved while we prepare the paperwork.

3

Review & Sign Contract

We prepare a legally binding transfer agreement between buyer and seller. Both parties review the terms and sign digitally through our platform.

4

Make Payment

Complete payment via SWIFT bank transfer (no extra fees) or Stripe credit card (5% processing fee). Funds are held securely in escrow.

5

Transfer & Ownership

We submit the transfer request to the relevant RIR and manage the process until the IPv4 block is officially reassigned to your organization.

Buyer Commission

Transparent pricing — what you see is what you pay

RECOMMENDED

Platform Managed

The seller is managed by IPv4.Center — we handle buyer sourcing, negotiation, contracts, and the full RIR transfer.

0% buyer commission
  • No commission for the buyer
  • No upfront deposit required
  • SWIFT transfer — no extra fee
  • Stripe credit card — 5% processing fee
  • Full escrow protection

Self-Managed Seller

The seller manages their own listing. A buyer-side commission applies to cover platform services and escrow.

5% buyer commission
  • 5% commission on transaction value
  • No upfront deposit required
  • SWIFT transfer — no extra fee
  • Stripe credit card — 5% processing fee
  • Full escrow protection

Our Quality Assurance Process

Every listing undergoes rigorous verification before it appears on our marketplace

Blacklist Scan

Screened across 300+ blacklist providers — 100% clean guarantee before listing.

Abuse History Check

No VPN, Tor, or Proxy usage history — verified via ipqualityscore.com.

BGP Routing History

Clean BGP routing record — no hijacking incidents or unauthorized announcements.

Seller Verification

Verified seller identity and confirmed RIR ownership through official records.

Geo-Location Accuracy

Accurate geo-location data validated for every subnet in the listing.

WHOIS & Route Objects

Up-to-date WHOIS records and properly configured route objects verified.

Why Buy Through IPv4.Center?

A secure, transparent marketplace built for organizations that demand reliability and buyer protection at every stage

Blacklist-Free Guarantee

Every IPv4 block is screened against major blacklist databases including Spamhaus, SURBL, and CBL before listing. We guarantee clean address space.

Verified Sellers

All sellers complete KYC verification and prove legitimate RIR ownership. You deal only with authenticated organizations.

All RIR Regions

Access IPv4 blocks from RIPE NCC, ARIN, APNIC, LACNIC, and AFRINIC. Global coverage for wherever your network operates.

Managed Transfers

Our team handles the entire RIR transfer workflow — from contract preparation and submission to post-transfer verification.

Secure Escrow

Buyer funds are held in escrow until the RIR transfer is fully confirmed. Your payment is protected throughout the process.

Fast Process

Streamlined workflow means RIPE transfers complete in as little as 1–2 weeks. Other registries typically within 2–5 weeks.

Complete Purchase Workflow

Two secure pathways to acquire IPv4 addresses — choose the one that fits your needs

RECOMMENDED

Direct Payment

1

Browse marketplace, select your subnet

2

Accept the purchase commitment terms

3

We verify your organization documents (KYC)

4

Purchase agreement prepared and sent to you

5

You sign and return the agreement within 3 business days (stamped)

6

Invoice issued for the full amount

7

You send payment to our bank account

8

Payment confirmed — Transfer Agreement prepared

9

Transfer Agreement signed: first buyer, then seller

10

Seller initiates Transfer Request on RIR (with company registration papers)

11

RIR verifies and completes transfer (1–3 business days for RIPE)

12

Transfer confirmed — seller receives their payment

Via Escrow.com

1

Browse marketplace, select your subnet

2

Accept the purchase commitment terms

3

We verify your organization documents (KYC)

4

Purchase agreement prepared and signed by both parties

5

Escrow.com transaction created with release condition

6

Condition: "IP organization changed to ORG-xxx in RIR database"

7

You send funds to Escrow.com — fully secured

8

Funds secured — Transfer Agreement prepared and signed

9

Seller initiates Transfer Request on RIR (with company registration papers)

10

RIR verifies and completes transfer (1–3 business days for RIPE)

11

Transfer confirmed → Escrow.com releases payment to seller

Purchase Commitment: When you initiate a purchase, the listing is temporarily reserved for you. You must return the signed purchase agreement within 3 business days. If you fail to complete the transaction, a $500 penalty fee will be applied to your next purchase on the platform.
Escrow.com is owned by eBay and holds funds until the transfer condition is met. Fees range from 1%–4% of the transaction value. Fee Calculator →

Secure Payment Options

Multiple payment methods to suit your organization — all protected with escrow

No Fee

Bank Wire / SWIFT

Direct USD transfers, no processing fee, escrow protected.

5% Fee

Stripe

Visa, Mastercard, Amex. 5% processing fee. Instant confirmation.

Multi-Currency

Wise.com

40+ currencies (EUR, GBP, JPY, AUD, CAD, CHF, SGD, HKD, etc.). Competitive rates.

Crypto

Crypto Currencies

Pay with USDT via Ethereum (ERC-20). Fast, borderless transactions.

Supported RIR Regions

Buy IPv4 address blocks from any Regional Internet Registry worldwide

RIPE NCC
Europe, Middle East, Central Asia
1–2 weeks
ARIN
North America
2–4 weeks
APNIC
Asia Pacific
2–3 weeks
LACNIC
Latin America & Caribbean
3–5 weeks
AFRINIC
Africa
3–5 weeks

RIPE NCC Registration Fees

Signup Fee: €1,000

Annual Fee: €1,800

ARIN Registration Fees

Signup Fee: $50

Annual Fee: $250

RIR Transfer Fees (2026)

Transfer fees charged by Regional Internet Registries for IPv4 address transfers. These are separate from the IPv4 purchase price.

Intra-RIR Transfers (Same Registry)

Transfer RouteFeePaid ByNote
RIPE → RIPENo feeNo RIR transfer fee for intra-RIPE
ARIN → ARIN$500 + recipient feeSource pays $500, Recipient pays tier feeRecipient fee based on block size
APNIC → APNIC20% of annual feeRecipient (Buyer)Based on membership tier
LACNIC → LACNIC$200 + $1,000–$1,500Ticket: Seller, Transfer: Buyer$1,000 for < /19, $1,500 for ≥ /19
AFRINIC → AFRINICVariesContact AFRINICIntra-RIR only, no inter-RIR transfers

Inter-RIR Transfers (Between Registries)

Transfer RouteSource RIR FeeReceiving RIR FeeTotal Estimated
ARIN → RIPE$500 (ARIN)No fee (RIPE)~$500
RIPE → ARINNo fee (RIPE)$500 + tier fee (ARIN)$500 + tier
APNIC → RIPE20% annual (APNIC)No fee (RIPE)~AUD 250
RIPE → APNICNo fee (RIPE)20% annual (APNIC)~AUD 250
ARIN → APNIC$500 (ARIN)20% annual (APNIC)$500 + ~AUD 250
APNIC → ARIN20% annual (APNIC)$500 + tier fee (ARIN)~AUD 250 + $500 + tier
LACNIC → RIPE$1,200 (LACNIC)No fee (RIPE)$1,200
RIPE → LACNICNo fee (RIPE)$1,200 (LACNIC)$1,200

ARIN Recipient (Buyer) Transfer Fee Tiers

Block SizeRecipient Fee
/24 or smaller$187.50
/24 – /22$375
/22 – /20$750
/20 – /18$1,500
/18 – /16$3,000
/16 – /14$6,000
/14 – /12$12,000
/12 – /10$24,000

* ARIN recipient fees are in addition to the $500 source processing fee. Fees apply to both intra-ARIN and inter-RIR transfers where ARIN is the receiving registry.

Who Pays the Transfer Fees?

RIPE NCC: No RIR transfer fee for intra-RIPE transfers.

ARIN: $500 processing fee paid by the source (seller). Recipient (buyer) pays a separate tiered fee based on block size ($187.50 – $192,000).

APNIC: 20% of annual membership fee — typically paid by the recipient (buyer) for intra-APNIC, source pays for inter-RIR transfers out.

LACNIC: $200 initial ticket fee (seller opens) + $1,000–$1,500 transfer fee (buyer pays).

Transfer fees are separate from the IPv4 purchase price and ipv4.center commissions. Fees are subject to change by each RIR — last verified February 2026.

What You Need to Buy IPv4

Ensure you have these in place before starting the purchase process

RIR Membership or Sponsorship

You need an active LIR account (RIPE), Org ID (ARIN), or equivalent membership at the relevant registry. We can guide you through the signup process if needed.

Organization Documents

Valid company registration certificate, articles of incorporation, or equivalent government-issued documents proving your organization's legal standing.

Network Justification

A brief plan explaining how you intend to use the IPv4 address space. This is required by most RIRs to approve the incoming transfer.

Payment Capability

Ability to pay via SWIFT international bank transfer, credit card (Stripe), Wise.com, or cryptocurrency (USDT ERC-20). Full payment due after signing the purchase agreement.

Documents Required for IPv4 Purchase

Prepare these documents to ensure a fast and smooth transfer process

Company name and registered address
Tax ID and Tax Authority
Authorized person name and position
RIPE Org ID & Reg ID (or equivalent for ARIN/APNIC)
Company registration papers (within 3 months for RIPE)
Valid ID of authorized signatory
Important Checklist

Things to Consider Before Buying IPv4

Protect your investment by performing proper due diligence on any IPv4 purchase

Verify Clean IP Reputation

Check that the block has no active entries on Spamhaus, SURBL, Barracuda, or other major blacklist databases.

Review BGP History

Examine the prefix's routing history for any hijacking incidents, unauthorized announcements, or suspicious activity.

Confirm Seller Ownership

Validate that the seller is the legitimate holder through official RIR WHOIS records and registration data.

Use Escrow Protection

Never send payment directly to a seller. Always use a trusted escrow mechanism to protect your funds until transfer is confirmed.

Check for Existing ROAs

Ensure no conflicting Route Origin Authorizations exist that could interfere with your ability to announce the prefix.

Understand Transfer Policies

Each RIR has specific transfer requirements and timelines. Know the process for your target registry before committing.

Plan Your Announcement Strategy

Prepare your BGP configuration, create ROA (Route Origin Authorization) records, and coordinate with your upstream providers before the transfer completes.

Frequently Asked Questions

Everything you need to know about purchasing IPv4 address blocks

How do I buy an IPv4 address block?

Purchasing IPv4 addresses through ipv4center.com is straightforward. Browse our marketplace and filter by prefix size, RIR region, or price. When you find the right block, accept the purchase commitment terms — we then prepare and send you the purchase agreement. You have 3 business days to sign and return it. After payment via SWIFT, Stripe, Wise, Crypto, or Escrow.com, our team submits the transfer request to the relevant RIR and manages it until your block is officially reassigned. The entire process typically takes 1–5 weeks depending on the registry.

What happens after I purchase an IPv4 block?

Once your payment clears and is held in escrow, we initiate the formal transfer process with the relevant Regional Internet Registry. The seller's registry processes a transfer-out, while your registry handles the transfer-in. Once approved, the block is officially assigned to your organization's RIR account. You then receive full ownership rights — you can create ROA records, update WHOIS information, set up route objects, and announce the prefix via BGP through your upstream providers.

What should I verify before buying IPv4 addresses?

Due diligence is essential for any IPv4 purchase. Verify the block has no active blacklist entries (Spamhaus, SURBL, Barracuda, etc.), review the BGP routing history for any hijacking or unauthorized announcements, confirm the seller's legitimate ownership through RIR WHOIS records, and check for conflicting ROA entries. You should also ensure your own RIR membership is active and that you have a network justification plan ready. ipv4.center performs comprehensive checks on every listing, but independent verification is always recommended.

Where is the best place to buy IPv4 addresses?

A transparent IPv4 marketplace like ipv4.center provides the strongest combination of price visibility, buyer protection, and transaction support. Unlike traditional brokers who negotiate in private, marketplace platforms let you compare multiple listings side-by-side, verify seller credentials, and benefit from escrow protection. Key factors to look for include blacklist screening, managed RIR transfers, transparent commission structures, and a track record of successful transactions across multiple registries.

Should my organization buy or lease IPv4 addresses?

The right choice depends on your usage timeline and financial strategy. Buying is more cost-effective for organizations that need addresses for two or more years — IPv4 is a finite resource with historically appreciating value, making it both an operational asset and an investment. Leasing suits short-term projects, seasonal capacity needs, or situations where you prefer operational expense over capital expenditure. Many organizations adopt a hybrid approach: owning core address space while leasing supplementary blocks for temporary workloads or geographic expansion.

What is the current IPv4 address price range?

IPv4 pricing depends on block size, RIR region, and current market demand. As of 2025–2026, per-IP prices generally range from $27 to $45 depending on the prefix size. Smaller blocks like /24 (256 IPs) tend to have higher per-IP costs, while larger blocks like /20 (4,096 IPs) offer volume discounts. RIPE NCC and ARIN blocks may differ in pricing due to regional supply-demand dynamics. Visit our marketplace for real-time pricing, or contact our team for a personalized quote based on your specific requirements.

How long does an IPv4 transfer take?

Transfer timelines vary by Regional Internet Registry. RIPE NCC transfers are typically the fastest at 1–2 weeks. ARIN transfers generally take 2–4 weeks due to additional approval steps and needs-based justification. APNIC averages 2–3 weeks, LACNIC intra-RIR 3–5 weeks (inter-RIR 4–8 months), and AFRINIC 3–5 weeks (intra-RIR only, no inter-RIR transfers available). Timelines can extend if documentation is incomplete, if either party lacks active RIR membership, or during peak processing periods. Our team proactively manages each step to minimize delays.

What documents are needed to buy IPv4 addresses?

The documentation requirements depend on your RIR region. Generally, you need: (1) active RIR membership — an LIR account for RIPE NCC, an Org ID for ARIN, or equivalent for other registries; (2) government-issued organization registration documents such as a certificate of incorporation; (3) identification of the authorized signatory; and (4) a network justification plan describing your intended use of the address space. ipv4.center provides guidance on the specific requirements for each registry and helps you prepare the necessary documentation.

What Happens When You Buy an IPv4 Address?

When you purchase an IPv4 address block, the process involves several key stages. First, the seller's ownership and the block's reputation are verified through RIR records and blacklist checks. Next, both parties sign a legally binding transfer agreement. Payment is secured through escrow, protecting both buyer and seller. The seller then initiates a transfer request with their Regional Internet Registry, which verifies the transaction and updates the registration to your organization. Finally, you configure the address space on your network — creating ROA records, updating WHOIS data, setting up route objects, and announcing the prefix via BGP through your upstream providers.

Things to Consider Before Buying IPv4 Addresses

Before purchasing IPv4 addresses, perform thorough due diligence: check the IP block against all major blacklists (Spamhaus, SURBL, Barracuda) to ensure a clean reputation. Avoid IPs previously registered in sanctioned countries, as these may face routing restrictions. Review the BGP routing history for any hijacking incidents or unauthorized announcements. Verify the seller's identity and legitimate RIR ownership through official WHOIS records. Always use an escrow service — never send payment directly to a seller. Request and verify the seller's company registration documents and authorized signatory identification before proceeding.

Where Can You Buy IPv4 Addresses?

IPv4 addresses can be acquired through several channels. IP brokers and marketplaces like ipv4.center offer transparent pricing, buyer protection, and managed transfers. Internet Service Providers (ISPs) occasionally sell surplus address space directly. Regional Internet Registries — ARIN, RIPE NCC, APNIC, LACNIC, and AFRINIC — facilitate transfers between member organizations, though they no longer allocate new blocks from free pools. Private transactions between organizations are also possible but carry higher risk without broker verification and escrow protection. A trusted marketplace provides the best combination of price transparency, security, and transfer support.

Should Businesses Buy or Lease IPv4 Addresses?

The decision between buying and leasing IPv4 addresses depends on several factors. Buying is ideal for long-term needs (2+ years) — you gain full ownership, the asset historically appreciates in value, and there are no recurring lease payments. Leasing suits short-term projects, seasonal capacity, or when you prefer operational expense over capital expenditure. Consider your growth plans: buying provides permanent capacity, while leasing offers flexibility to scale up or down. Availability differs too — leased blocks are available almost instantly, while purchased blocks require RIR transfer processing. Maintenance is simpler with leasing as the lessor handles RIR compliance. However, purchased blocks are fully transferable and can be sold later, offering an exit strategy that leasing does not.

What are IPv4 Address Classes (Class A, B, C, D, E)?

IPv4 addresses are historically divided into five classes: Class A (1.0.0.0 – 126.255.255.255) supports 126 networks with 16 million hosts each, designed for large organizations. Class B (128.0.0.0 – 191.255.255.255) provides 16,384 networks with 65,534 hosts each, suitable for medium-sized organizations. Class C (192.0.0.0 – 223.255.255.255) offers over 2 million networks with 254 hosts each, ideal for small businesses. Class D (224.0.0.0 – 239.255.255.255) is reserved for multicast, and Class E (240.0.0.0 – 255.255.255.255) is reserved for experimental use. While classful addressing has been largely replaced by CIDR (Classless Inter-Domain Routing), understanding IP classes remains important for network planning and IPv4 purchases.

Can I buy Class A, Class B, or Class C IPv4 addresses?

Yes, you can purchase IPv4 addresses from any class through the secondary market. Class C addresses (/24 blocks with 256 IPs) are the most commonly traded and start around $6,400–$9,000. Class B equivalent blocks (/16 with 65,536 IPs) are rare and valued at $983,000–$1,638,000. Class A equivalent blocks (/8 with 16 million IPs) are extremely rare — most are held by large corporations and governments. At ipv4.center, we primarily facilitate transfers of /24 through /16 blocks across all RIR regions. Contact us for availability of larger blocks.

What is the difference between Class A, Class B, and Class C IP addresses?

The main differences are network size and address range. Class A uses the first octet for network identification (1-126), providing massive networks with 16 million hosts each — originally allocated to large organizations like IBM, AT&T, and government agencies. Class B uses the first two octets (128-191.x), offering medium-sized networks with 65,534 hosts. Class C uses three octets (192-223.x.x), suitable for small networks with 254 hosts. In modern networking, CIDR notation (/8, /16, /24) has replaced classful addressing, but these class designations still influence IPv4 pricing and availability in the secondary market.

Everything You Need to Know About Buying IPv4 Addresses

The global IPv4 market has matured into a well-established secondary market where organizations buy IPv4 addresses to meet growing infrastructure demands. With IANA and regional registries having exhausted their free pools, the only way to acquire IPv4 address space is through transfers from existing holders. Whether you need a single /24 subnet or a large /16 block, understanding the market dynamics is essential for making an informed purchase.

For organizations operating in Europe and the Middle East, the RIPE IPv4 transfer process is one of the most streamlined. RIPE NCC facilitates inter-RIR and intra-RIR transfers with clear documentation requirements and fast processing times. Similarly, ARIN transfers in North America follow a needs-based justification model. If you want to buy an IPv4 block, working with a trusted IPv4 broker ensures compliance with registry policies and protects your investment. The /24 subnet price has seen steady appreciation over the past decade, making IPv4 addresses both an operational necessity and a sound asset.

IPv4 pricing trends are driven by supply scarcity and growing demand from cloud providers, ISPs, hosting companies, and enterprises expanding their networks. As an IPv4 address transfer facilitator, ipv4.center provides real-time marketplace visibility so you can compare offers, evaluate block quality, and buy IPv4 addresses at competitive market rates. Our platform supports all five RIRs, giving you access to global inventory regardless of your geographic location.

IPv4 due diligence is the cornerstone of any safe purchase. Before committing to a transaction, buyers must verify that the address space is free from blacklist entries, has no history of abuse or hijacking, and is legitimately owned by the seller. At ipv4.center, every listing undergoes comprehensive screening — including reputation checks against 300+ blacklist providers and BGP routing history analysis — so you receive only clean IPv4 addresses ready for immediate deployment.

Escrow protection is a critical safeguard in any IPv4 transaction. Whether you use our built-in escrow service or a third-party platform like Escrow.com, your funds remain protected until the RIR transfer is officially completed. The IPv4 transfer timeline varies by registry — RIPE NCC transfers typically complete in 1–2 weeks, while ARIN and APNIC may take 2–4 weeks. Understanding these timelines helps you plan your network deployment and ensures a smooth transition of address ownership.

Understanding IPv4 address classes is fundamental to network planning. Class A addresses (1.0.0.0 – 126.255.255.255) were originally allocated to the largest organizations and provide massive address spaces with over 16 million hosts per network. Class B addresses (128.0.0.0 – 191.255.255.255) serve medium to large organizations with up to 65,534 hosts per network. Class C addresses (192.0.0.0 – 223.255.255.255) are the most commonly traded in the IPv4 market, offering 254 hosts per network — perfect for small to medium businesses. While modern networking uses CIDR notation, these class designations still influence IPv4 market pricing and block availability.

Choosing ipv4.center for your secure IPv4 purchase means working with a platform that combines marketplace transparency, verified seller credentials, managed RIR workflows, and dedicated support. Our team has facilitated hundreds of successful transfers across all registry regions, earning the trust of ISPs, data centers, cloud providers, and enterprises worldwide. From your first marketplace search to post-transfer verification, we are committed to making your IPv4 acquisition seamless, secure, and fully compliant with registry policies.

Understanding IPv4 Address Classes

A comprehensive guide to Class A, Class B, Class C, Class D, and Class E IP addresses

IPv4 addresses are historically categorized into five classes (A through E) based on the value of their first octet. While classful addressing has been replaced by CIDR in modern networking, understanding these classes remains essential for network planning and IPv4 market transactions.

Class A

Available
Range
1.0.0.0 – 126.255.255.255
Mask
255.0.0.0 (/8)
Networks
126
Hosts/Net
16,777,214
Usage
Large organizations, ISPs, government agencies

Class A addresses use the first octet for network identification, leaving three octets for host addresses. Originally allocated to the largest organizations like IBM, AT&T, Apple, and US government agencies. A single Class A block (/8) contains over 16 million IP addresses, making these extremely valuable and rarely available on the secondary market.

Class B

Available
Range
128.0.0.0 – 191.255.255.255
Mask
255.255.0.0 (/16)
Networks
16,384
Hosts/Net
65,534
Usage
Medium to large organizations, universities, enterprises

Class B addresses use two octets for network identification. A /16 block provides 65,534 usable host addresses, suitable for large enterprises, universities, and regional ISPs. Class B equivalent blocks on the secondary market are valued at approximately $983,000–$1,638,000.

Class C

Available
Range
192.0.0.0 – 223.255.255.255
Mask
255.255.255.0 (/24)
Networks
2,097,152
Hosts/Net
254
Usage
Small businesses, branch offices, small ISPs

Class C addresses use three octets for network identification. A /24 block (the smallest routable prefix on the internet) provides 254 usable host addresses. Class C blocks are the most commonly traded in the IPv4 market, with prices ranging from $6,400–$9,000 for a /24 subnet.

Class D

Range
224.0.0.0 – 239.255.255.255
Mask
N/A (Multicast)
Networks
N/A
Hosts/Net
N/A
Usage
Multicast groups, streaming, video conferencing

Class D addresses are reserved for multicast traffic. Unlike unicast addresses, multicast addresses identify a group of receivers rather than a single host. These addresses are not available for purchase or transfer and are used for applications like IPTV, video conferencing, and network discovery protocols.

Class E

Range
240.0.0.0 – 255.255.255.255
Mask
N/A (Reserved)
Networks
N/A
Hosts/Net
N/A
Usage
Reserved for experimental and future use

Class E addresses are reserved by IANA for experimental purposes and future use. They are not allocated for general use on the public internet and cannot be purchased or transferred. The address 255.255.255.255 is the broadcast address used for network-wide communications.

In the IPv4 secondary market, only Class A, B, and C addresses (1.0.0.0 – 223.255.255.255) are available for purchase. Most transactions involve /24 (Class C equivalent) through /16 (Class B equivalent) blocks. Class A equivalent /8 blocks are extremely rare and typically held by major corporations and governments.

What Our Clients Say

Trusted by ISPs, hosting providers, banks, and enterprises across 50+ countries

Buyer

We have purchased over a dozen subnets ranging from /20 to /24 through IPv4.Center. Every block was clean, and the RIPE and ARIN transfers were managed end-to-end. Pricing transparency across all listings made comparing offers effortless.

VP of Engineering

3NT

Multiple /20–/24 subnets purchased

Buyer

We acquired a full /16 block for our global hosting infrastructure. IPv4.Center handled the due diligence, escrow, and RIR transfer flawlessly. Having 65,536 clean IPs under a single allocation was critical for our scale.

Technical Director

ISHosting

/16 block purchased (65,536 IPs)

Buyer

Fifty /24 subnets — all purchased through IPv4.Center over the past year. Each block came with a clean blacklist report and the transfers averaged under 10 business days. Their inventory depth is unmatched.

Network Architect

Truview

50x /24 subnets purchased

Buyer

Between our five /20 blocks, the /19, and two /21s, IPv4.Center has been our sole IPv4 supplier. The team understands enterprise-scale procurement — documentation, compliance, escrow, everything was handled professionally.

Infrastructure Lead

Steel-Axis

5x /20, 1x /19, 2x /21 purchased

Buyer

We are satisfied with our experience with IPv4Center.com. We purchased 768 IP addresses and the entire process was completed quickly and efficiently.

IT Department

Türkiye Halk Bankası A.Ş.

768 IPs purchased

Buyer

As a crypto exchange, IP reputation directly impacts our deliverability and security posture. IPv4.Center sourced us a pristine /23 block with no proxy, VPN, or abuse history. The transfer was handled professionally.

IT Security

BtcTürk

512 IPs purchased

Trusted By

Huawei
Microsoft
3NT
ISHosting
Bright Data
TruView
Steel-Axis
Halkbank
Dünya Katılım Bankası
Ahlatcı Holding
Volkswagen
OdeaWeb
NetFactor
Netbudur
Nethouse
Salihli WiFi
NetOnline / Hipernet
Alfanet
BizimCloud
İstanify
Netmax
Koçtaş
LC Waikiki
Pratik Ödeme
BtcTürk
Ahlatcı Kripto
MGN Teknoloji
Ödeal
ICT / Bulutistan
Surnet
NetGigabit
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Huawei
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Dünya Katılım Bankası
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OdeaWeb
NetFactor
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Salihli WiFi
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BtcTürk
Ahlatcı Kripto
MGN Teknoloji
Ödeal
ICT / Bulutistan
Surnet
NetGigabit
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