IPv4 leasing works when both sides can trust the paperwork. That is the part we decided to build properly.
The free pool of IPv4 addresses ran out years ago. Every regional registry now allocates from waiting lists, recovered space or nothing at all. Meanwhile a great deal of address space sits registered to organisations that no longer announce it — companies that downsized, migrated to cloud, or were acquired and consolidated.
Those two facts should meet in a market, and they do. What has been missing is a marketplace where the boring parts are handled: proving the person leasing the space is entitled to, generating the authorisation an upstream will actually accept, creating the routing objects that make an announcement validate, and telling both sides when something goes wrong with the block's reputation.
We verify that an owner controls the space they are listing, against the registry record rather than their word for it. We verify the organisations leasing it. When a lease starts we generate the Letter of Authorization, and where the owner has connected their registry API we create the ROA and the IRR route object at the same time — so the announcement validates rather than being silently filtered.
Then we keep checking. Every listed and leased block is queried against 25 live DNS blocklists on a schedule, and both the owner and the tenant are told when an address is newly listed. Address reputation is the thing that makes leasing risky for an owner, so it is monitored rather than hoped about.
We do not sell address space. We do not broker registry transfers. We do not take custody of anyone's addresses — the registration stays with its holder throughout, which is precisely what makes a lease reversible.
We also do not publish inventory we have not verified. If the marketplace is empty, it is empty; a page of blocks we could not confirm would be worse than nothing.
A 15% commission on the monthly value of an active lease, charged to the owner. Listing is free, verification is free, and monitoring of a block being leased through us is included for both parties. If nothing is leased, we are not paid.
IPv4 Hub operates from Scottsdale, Arizona. The blacklist monitoring runs on our own hardware rather than a third-party service, which is what lets us query authoritative nameservers directly and avoid the false positives that public resolvers produce.
Support and general enquiries: the contact form, or info@ipv4hub.net. If you are an owner with space to list and questions first, say so — we would rather answer them up front.
Whether you need addresses or have them sitting idle, start here.