Questions, answered.

The registered holder of a block grants you the right to announce and use it for a fixed term, in exchange for a monthly fee. The registration itself does not move — the block stays in the owner's name at their RIR. You get a Letter of Authorization proving you are entitled to route it.

Buying means a registry transfer: justification documents, officer attestations, broker fees and a five-figure sum for even a /24, plus an asset you have to resell if your needs change. Leasing is a monthly cost you can start and stop, with no transfer process at all.

A /24, which is 256 addresses. Anything smaller cannot be announced independently on the public internet because most networks filter announcements longer than a /24, so a smaller lease would not be routable.

Where the owner has connected their registry API — typically ARIN, RIPE and APNIC blocks — authorisation and routing objects are created as soon as the lease starts, usually within minutes. LACNIC and AFRINIC blocks, and any owner who has chosen manual provisioning, are handled by our team within 48 hours.

Set by each owner. Most choose three months; some accept monthly. The minimum is shown on every listing and you can filter the marketplace by it.

Leases continue month to month after the minimum term until either side gives notice. You cannot end a lease inside the minimum term you agreed to.

The invoice is marked overdue and a ten-day grace period starts, with reminders at day three and day seven. If it is still unpaid at day ten the route authorisation is withdrawn and the lease is suspended. Nothing is cut off without warning.

To announce the space yourself, yes. If you do not have one, you can still use leased space through a provider who announces on your behalf — the LOA is what they will ask for.

Yes. Nothing is transferred. The registration stays in your name at your RIR, and you are granting a time-limited right to announce. At the end of the term the right reverts automatically.

Prevailing 2026 rates are roughly $0.60 to $1.10 per address per month, so a clean /24 typically returns $150–$280 a month. Larger blocks scale close to linearly. You set your own price.

15% of the monthly lease value, charged to the owner and only on money actually collected. Listing, verification and monitoring are free.

We check the block against the registry record for the organisation handle you provide at your RIR. A listing is not published until that check passes.

Tenants are verified before they can lease and every lease carries an acceptable use policy. The block is monitored against 20 blocklists continuously and both sides are alerted on any new listing. Confirmed abuse ends the lease and withdraws the authorisation.

Monthly, to your nominated bank account or PayPal, once the tenant's payment for that period has cleared.

Yes. You can decline any lease request without giving a reason.

ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC. ARIN, RIPE and APNIC support API-driven provisioning, so leases in those regions can complete automatically. LACNIC and AFRINIC are handled manually within 48 hours.

Leasing address space you hold is permitted in all five regions, and none of them require a transfer for a lease. Policies do differ on registration and reassignment records, which is why we create the appropriate objects for each registry rather than a single generic record.

A Letter of Authorization is a signed statement from the registered holder saying you may announce a specific block. Transit providers ask for it before they will accept your announcement, because without it they cannot tell a legitimate route from a hijack.

A Route Origin Authorization is a cryptographically signed record stating which ASN may originate a prefix. Networks that do RPKI validation will reject an announcement whose ROA says a different ASN. We create the ROA for your ASN where the owner's registry supports it.

A record in an Internet Routing Registry describing which ASN announces a prefix. Many transit providers build their filters from IRR data, so without one your announcement may be silently dropped even if the ROA is correct.

In the ARIN region, reassignment of a /29 or larger to a customer should be registered. The customer portal has a SWIP section for exactly this, and the requirement is on whoever is reassigning downstream.

Yes, subject to the owner's permitted-use terms and our acceptable use policy. Because email is where address reputation is won and lost, blacklist monitoring matters more on these blocks than any other, and repeated listings are grounds for terminating a lease.

Every block is checked against 25 live DNS blocklists before it is published, and continuously afterwards for as long as it is listed or leased. The marketplace shows the current clean-versus-listed count for each block.

RepRadar emails you and the owner when an address in a monitored block is newly listed, with the address, the blocklist and the return code. Most listings are delistable once the cause is fixed, and the report page shows what to address.

Twenty-five, including Spamhaus ZEN, Barracuda, SpamCop, PSBL, Mailspike, SpamRATS, DroneBL, SPFBL, Backscatterer and UCEPROTECT. Lists that have shut down, such as SORBS and NiXSPAM, are deliberately excluded — querying a dead zone can return a listing for every address you ask about.

No. Those list entire netblocks and autonomous systems rather than individual addresses, so a clean address appears listed because an unrelated neighbour misbehaved. We report them for context but never count them toward a verdict.

Yes. RepRadar is available as a standalone subscription for any space you control, with a five-day free trial.

Because owners are letting strangers announce address space registered in their name. Verification is what makes that reasonable, and it is why we can show verified users full block details rather than masked ones.

Card and PayPal for immediate activation, and bank wire or ACH where a lease is activated once funds clear.

Yes. Every login sends a one-time code to your registered email address. There is no way to sign in without access to that mailbox.

Company and contact details are used to verify you, generate authorisation letters and meet registry requirements. We do not sell data. The privacy policy sets out what is kept and for how long.