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Terms of Service

Last updated: February 28, 2026

These Terms of Service ("Terms") govern your use of IPv4Center.com ("Platform"), operated by Centerium LLC, a Delaware-registered company ("Company", "we", "us"). By accessing or using our Platform, you agree to be bound by these Terms.

1. Definitions

  • "Buyer" refers to any user who purchases or leases IPv4 address blocks through the Platform.
  • "Seller" or "Lessor" refers to any user who lists IPv4 address blocks for sale or lease on the Platform.
  • "Listing" refers to an IPv4 address block offered for sale or lease on the Platform.
  • "RIR" refers to a Regional Internet Registry (RIPE NCC, ARIN, APNIC, LACNIC, AFRINIC).
  • "Transfer" refers to the official reassignment of IPv4 address resources between organizations as recorded by the relevant RIR.

2. Eligibility

You must be at least 18 years of age and represent a legally registered organization to use our Platform. By registering, you represent and warrant that all information provided is accurate, current, and complete. We reserve the right to suspend or terminate accounts that provide false or misleading information.

3. Account Registration & KYC

To buy, sell, or lease IPv4 addresses, you must complete our Know Your Customer (KYC) verification process. This includes providing:

  • Valid company registration documents (issued within the last 3 months)
  • Organization details including tax ID and authorized representative information
  • RIR membership details (Org ID, Reg ID) where applicable
  • Contact information for transaction-related communications

You are responsible for maintaining the confidentiality of your account credentials and for all activities under your account.

4. Listing & Sale of IPv4 Addresses

Sellers may list IPv4 address blocks for sale subject to the following conditions:

  • The seller must be the legitimate holder of the IPv4 addresses as recorded by the relevant RIR.
  • All listings are subject to review and approval by IPv4.Center administration.
  • A listing agreement must be signed and returned (stamped with company seal) before the listing goes live.
  • IPv4.Center reserves the right to reject any listing that does not meet our quality or compliance standards.
  • Listings may be removed if the seller fails to respond to buyer inquiries or complete transactions in a timely manner.

5. Purchase Commitment & Penalties

When a buyer initiates a purchase, they accept the following commitment:

  • The selected listing is temporarily reserved while purchase agreements are prepared.
  • The buyer must return the signed purchase agreement within 3 business days.
  • If the buyer fails to complete the transaction (including failure to return signed documents or complete payment), a $500 penalty fee will be applied to their next transaction on the Platform.
  • If the buyer fails to act within the 3-business-day window, the listing is automatically restored to the marketplace.

6. Commission & Fees

All commission rates are configurable and may be adjusted on a per-transaction, per-buyer, or per-seller basis at the discretion of IPv4.Center administration. The applicable commission rate will be clearly disclosed before any transaction is finalized.

Sale Transactions

  • Platform-managed: 10% seller commission
  • Self-managed: 5% buyer commission
  • Stripe payments: additional 5% processing fee (paid by buyer)
  • SWIFT transfers: no additional fee

Lease Transactions

  • Standard commission: 10% (deducted from lease payments)
  • Commission rates may be adjusted per-account by administration

7. Payment Terms

We accept the following payment methods:

  • SWIFT bank transfer — No additional processing fee. Currency conversion fees, if any, are the responsibility of the payer.
  • Stripe (credit/debit card) — 5% processing fee applies, paid by the buyer.
  • Wise.com — Multi-currency transfers supported. Any conversion fees are the payer's responsibility.
  • Crypto (USDT via Ethereum ERC-20) — Network gas fees are the payer's responsibility.
  • Escrow.com — Escrow fees (approximately 1%–4%) apply. Payment is released only upon verified RIR transfer completion.

All prices on the Platform are denominated in US Dollars (USD). If a seller elects to receive payment in a different currency, any conversion fees or exchange rate differences are the seller's responsibility.

8. RIR Transfer Process

IPv4.Center facilitates the RIR transfer process but does not guarantee transfer approval by any RIR. Transfer timelines vary by registry: RIPE NCC transfers typically complete within 1–3 business days, while ARIN and APNIC transfers may take 2–5 weeks. Both buyer and seller must cooperate fully with the transfer process, including providing all required documents and responding to RIR inquiries in a timely manner. Failure to cooperate may result in transaction cancellation.

9. Lease Agreements

IPv4 lease agreements are facilitated through the Platform. Lease terms (monthly, quarterly, semi-annual, annual) and pricing are set by the lessor. IPv4.Center collects lease payments from lessees and remits the net amount (minus commission) to the lessor. Lessees receive a Letter of Authorization (LOA) and Route Origin Authorization (ROA) for the duration of the lease. IP address ownership is not transferred in lease transactions — the lessor retains full RIR registration and ownership.

10. IP Address Verification & Blacklist Policy

IPv4.Center performs blacklist checks on all listed IP blocks using 300+ blacklist providers. We reserve the right to reject or delist any IP blocks that have significant blacklist issues, abuse history, or reputation problems. We offer free subnet cleanup assistance for minor issues. However, we do not guarantee that any IP block is completely free of blacklist entries or reputation issues.

11. Limitation of Liability

IPv4.Center acts as a facilitator and marketplace platform. To the maximum extent permitted by law, we shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising from your use of the Platform, any failed or delayed RIR transfers, any disputes between buyers and sellers, or any loss of data or business interruption. Our total aggregate liability shall not exceed the amount of commission fees paid to us in the 12 months preceding the claim.

12. Intellectual Property

All content, trademarks, and intellectual property on the Platform are owned by Centerium LLC or its licensors. You may not reproduce, distribute, or create derivative works from any Platform content without prior written consent.

13. Termination

We reserve the right to suspend or terminate your account at any time for violation of these Terms, fraudulent activity, or any conduct that we deem harmful to the Platform or its users. Upon termination, any pending transactions will be handled on a case-by-case basis at our discretion.

14. Governing Law & Dispute Resolution

These Terms shall be governed by and construed in accordance with the laws of the State of Delaware, United States, without regard to conflict of law principles. Any disputes arising under these Terms shall be subject to the exclusive jurisdiction of the courts of Delaware. Before initiating any legal proceedings, both parties agree to attempt good-faith resolution through direct negotiation for a period of at least 30 days.

15. Modifications

We reserve the right to modify these Terms at any time. Material changes will be communicated via email or Platform notification at least 14 days before taking effect. Your continued use of the Platform after such changes constitutes acceptance of the modified Terms.

16. Contact Information

For questions or concerns regarding these Terms, please contact us:

  • Email: info@ipv4center.com
  • Company: Centerium LLC
  • Address: 109 Fowler Ct, New Castle, Delaware 19720-5409, United States