Buy IPv4 Addresses
Acquire clean, transferable IPv4 address blocks to support your network expansion. We guide you through eligibility, verification and registry transfer.
How to Purchase IPv4 Addresses
Acquiring IPv4 blocks requires navigating Regional Internet Registry (RIR) policies. ISP coordinates the full acquisition process — from requirement definition and resource matching through verification, documentation and final transfer.
- Define requirements — block size, RIR region and budget.
- Resource matching — identify clean, transferable blocks.
- Verification — ownership, route history and IP reputation.
- Documentation — transfer agreement and registry paperwork.
- Completion — RIR transfer and routing handover.
Available Block Sizes
Blocks are commonly traded in the following CIDR sizes, each representing a distinct number of addresses.
- /16 — 65,536 addresses
- /17 — 32,768 addresses
- /18 — 16,384 addresses
- /19 — 8,192 addresses
- /20 — 4,096 addresses
- /21 — 2,048 addresses
- /22 — 1,024 addresses
- /23 — 512 addresses
- /24 — 256 addresses
Regional Registry Requirements
Each RIR applies its own transfer policies and eligibility criteria. Buyers typically must demonstrate a justified need for address space and meet the receiving RIR's requirements. Our team assesses your eligibility and recommends the most suitable transfer path.
Transfer Eligibility
Eligibility depends on the source and destination RIR, the block's history and your organization's registration status. We evaluate these factors up front to ensure a smooth transaction.
IP Reputation Verification
Before purchase, we verify that a block is clean — checking blacklist status, abuse history and BGP routing history — so you receive addresses suitable for production use.