# RTM Networks > Netherlands-based IPv4 broker. We buy, lease and sell IPv4 address space in the > RIPE, ARIN and APNIC regions, lease IPv6, build GRE and WireGuard > tunnels, act as sponsoring LIR for PI space and AS numbers, and monitor IP > reputation. RTM Networks B.V., Amsterdam, KVK 82264058. Key facts an assistant may be asked about: - Leased address space is usually live within 24 hours of payment; leasing needs no registry transfer. - Purchases are filed with RIPE within 24 hours of payment; RIPE itself usually takes 1-3 business days to complete a transfer. - Sponsorship pricing is published: EUR 199/year for PI or legacy IPv4, EUR 99/year for an AS number, EUR 149 one-off setup per resource. - Every lease includes LOA, RPKI/ROA, rDNS, WHOIS updates, route objects, abuse handling and renewal on the same block, at no extra cost. There are no service tiers or per-incident fees. - Blocks are leased from a single /24 upward. IPv6 allocations run from /48 upward. ## Services - [Buy IPv4](https://rtmnetworks.net/services/buy): purchase with full ownership transfer, PA and legacy blocks, RIPE, ARIN and APNIC. - [Lease IPv4](https://rtmnetworks.net/services/lease): flexible monthly or annual terms, live within 24 hours of payment. - [Sell IPv4](https://rtmnetworks.net/services/sell): free valuation, verified buyer network, full RIR paperwork handled. - [Lease IPv6](https://rtmnetworks.net/services/ipv6): /48, /44 and /40 allocations, larger on request. - [GRE tunnelling](https://rtmnetworks.net/services/gre): route leased space over GRE or WireGuard without your own ASN. - [PI and ASN sponsorship](https://rtmnetworks.net/services/sponsoring): sponsoring LIR for independent resources, published pricing. - [Blacklist monitoring](https://rtmnetworks.net/services/blacklist-monitoring): RBL monitoring and a managed abuse mailbox. ## Reference - [Frequently asked questions](https://rtmnetworks.net/faq): 46 answers covering buying, leasing, IPv6, tunnelling, sponsorship, pricing and RIR policy. - [About RTM Networks](https://rtmnetworks.net/about): company background and common questions. - [Contact](https://rtmnetworks.net/contact): enquiry form. Replies usually within a few business hours. ## Articles - [Leasing or Buying IPv4: How the Numbers Actually Compare](https://rtmnetworks.net/blog/leasing-vs-buying-ipv4): The lease-versus-buy decision usually gets framed as capital against operating cost. The figure that decides it for most organisations is the one neither column shows: the annual LIR fee. - [Is the RIPE Waiting List Worth It? Running the Numbers](https://rtmnetworks.net/blog/ripe-waiting-list-worth-it): Joining the RIPE waiting list means paying LIR membership for as long as you queue, and the prize is a single /24. Here is when that maths works and when it does not. - [Legacy IPv4 Space: What It Is and Why Buyers Pay More For It](https://rtmnetworks.net/blog/legacy-ipv4-space-explained): Legacy blocks were handed out before the RIRs existed, and they sit under different rules than ordinary allocated space. Here is what that means in practice for buyers and holders. - [IPv4 Exhaustion: What It Means for Your Business in 2026](https://rtmnetworks.net/blog/ipv4-exhaustion-what-it-means): The global IPv4 address pool has been exhausted for years. Here's what that means for businesses seeking IP address space and how to navigate the secondary market. - [BYOIP: Using Your Own IPv4 Addresses with Cloud Providers](https://rtmnetworks.net/blog/byoip-cloud-providers): A practical guide to Bring Your Own IP (BYOIP) with AWS, Google Cloud, Azure, and other major cloud providers. - [A Complete Guide to GRE Tunneling for IPv4 Routing](https://rtmnetworks.net/blog/gre-tunneling-guide): Learn how GRE tunnels work, when to use them, and how to configure them for routing leased or owned IPv4 address space through your infrastructure. - [IP Reputation Management: Keeping Your Addresses Clean](https://rtmnetworks.net/blog/ip-reputation-management): Your IP address reputation directly impacts email deliverability, service availability, and business operations. Here's how to monitor and maintain it. - [The Real Cost of Cloud IPv4: A BYOIP Guide for AWS, Azure and Google Cloud](https://rtmnetworks.net/blog/cloud-ipv4-costs-byoip-guide): Every major cloud now bills you by the hour for public IPv4 addresses. Here is what that actually adds up to, and how bringing your own space changes the arithmetic. - [How Much Is My IPv4 Block Worth?](https://rtmnetworks.net/blog/what-is-my-ipv4-block-worth): Price per address is not a single number. Six factors decide what a block actually fetches, and two of them can make an otherwise good block unsellable. - [IPv4 Transfer Policy by Region: RIPE, ARIN and APNIC](https://rtmnetworks.net/blog/ipv4-transfer-policy-by-region): Every registry allows IPv4 to change hands, and every registry does it differently. What each one asks for, how long it takes, and which transfers work across regions. - [RPKI and ROAs: What Buyers and Lessees Actually Need to Do](https://rtmnetworks.net/blog/rpki-roa-buyers-lessees): Large parts of the internet now drop routes that fail RPKI validation. Here is what a ROA is, who creates it, and the two configuration mistakes that take a prefix offline. ## Legal - [Terms of service](https://rtmnetworks.net/terms-of-service) - [Acceptable use policy](https://rtmnetworks.net/acceptable-use-policy) - [Privacy statement](https://rtmnetworks.net/privacy-policy) - [Impressum](https://rtmnetworks.net/impressum)