How to Buy Public IP Addresses

Which public IP address do you need?

A public IP address identifies an internet-facing connection or service. A private IP identifies a device inside a local network. Your laptop can have a private address while your router uses a public address to reach the internet.

Public does not mean static. A dynamic public IP can change; a static public IP stays assigned to your service while you retain that service. Start with what you need the address to do.

One fixed IP for an office or remote access

Ask your internet provider for a static public IPv4 address. Confirm that it supports the inbound connections your application needs. If your connection uses carrier-grade NAT, ask about a public-IP option; changing your router's private address will not create one.

A stable address for a hosted server or cloud service

Request a reserved or static public IP from the hosting or cloud provider. For example, an AWS Elastic IP is a static public IPv4 address for supported AWS resources. This is a provider service, not a transfer of an independent IPv4 block to your organisation.

IPv4 capacity for an ISP, hosting platform or network

Compare buying an address block with leasing capacity you can deploy through your network or an agreed provider. Match the block, routing arrangement and operating support to your customers. The steps below explain the purchase route.

For a closer look at shared connections, read CGNAT versus public IPv4.

How to buy a public IPv4 address block

For a portable block, buying means coordinating the transaction, registry transfer and network deployment. An address listing is the starting point. The result you want is working capacity with a clear operating plan.

1. Define the capacity and deployment

   Write down the address count, countries or regions, target date and services you will run. Include your hosting or transit provider early. A /24 contains 256 IPv4 addresses; the provider's routing and service design determines how you can deploy them. Confirm that the block size fits your network before choosing a listing.

2. Find a block that fits your network

   Use a specialist marketplace or work directly with a resource holder. The i.LEASE IPv4 purchase marketplace, powered by LARUS, is the existing purchase route. Compare the exact prefix, registry region, price and availability with your deployment needs.

3. Check the block before committing

   Check the registered holder in WHOIS or RDAP, the seller's authority to arrange the transfer and the block's routing history. Review reputation against the services you intend to run, including relevant blocklists. Agree how payment and the registry handover fit together. A useful check is specific to the block and your use, not just a “clean IP” label.

4. Coordinate the registry transfer

   The seller and recipient complete the applicable registry transfer process. For example, ARIN's specified-recipient process involves both parties and has a minimum transfer size of /24. Confirm the route for the actual source and destination registries, the fees and the expected handover before setting your launch date.

5. Arrange the ASN and routing

   If you operate your own autonomous network, an Autonomous System Number (ASN) identifies it in BGP, the protocol networks use to exchange reachability information. Arrange suitable connectivity and who will originate the prefix. If your provider announces the addresses for you, agree that arrangement with them; buying a block does not mean you must build your own BGP network.

6. Complete the handover and test real service

   Align the registration, routing records and origin ASN. A Route Origin Authorization (ROA) identifies the ASN authorised to originate a prefix; an IRR route object records routing information used by network operators. Coordinate any requested letter of authorisation, reverse DNS and router configuration. Then test external reachability and your actual applications before moving customer traffic.

Keep the routing records aligned after launch. Our guide to BGP, IRR and RPKI mismatches explains why an address can be registered correctly yet still have a routing problem.

What does a public IP address cost?

Compare the right type of offer. An ISP's monthly static-IP charge, a cloud provider's public-IP charge and the acquisition price of an IPv4 block pay for different things. A single advertised number does not describe the full network cost.

• Provider-supplied IP: compare the address charge, connectivity or hosting service and any setup costs.
• Purchased block: compare the acquisition price, transaction and registry fees, then transit, resource management and ongoing support.
• LARUS leasing: compare the capacity and Continuity plan your business needs, while keeping block-acquisition capital available for growth.

Use IPv4 pricing and market data to understand the market, then compare an actual block or plan against your requirements. Size, region, history and the operating arrangement all affect the decision.

For a purchase quote, start with the exact block in the i.LEASE marketplace. Compare its acquisition cost plus ongoing operations with a LARUS capacity and Continuity plan for the same address count and intended start date.

Buying an address is not the same as backing your business

A purchase can give you control of an acquired block. The purchase price alone does not settle who will keep it working, manage the registry relationship or support your business at renewal. For an operator whose customers depend on IPv4, those are part of the buying decision.

LARUS brings the rights foundation, operating partner and Continuity choice together. Cloud Innovation's shareholder-rights court materials document the foundation behind the relevant resources. Its mandate to LARUS appoints LARUS as the exclusive customer-facing commercial, operational and technical platform for the address estate it covers.

For your business, the next step is practical: choose the capacity, operating support and renewal commitment you need. LARUS offers Capacity, Production, Enterprise and Critical Continuity plans; Critical includes Guaranteed Renewal. Compare that complete relationship with buying and managing the block yourself.

Buy when acquisition and resource operations fit your business. Choose LARUS leasing when you want IPv4 capacity backed by that documented foundation, an operating partner and a plan for what comes next.

Questions about buying public IP addresses

How do I get a public IP address?

For one office connection or hosted service, start with your ISP or hosting provider's static-IP offering. You usually need an address attached to that service, rather than an independent block transfer. Ask whether it is dedicated to your service and supports the connections you need. For portable IPv4 capacity on an operator's network, compare an address-block transfer with LARUS leasing.

Can I get public IPv4 addresses directly from a RIR?

Check the relevant registry's current options. RIR membership does not automatically produce a fresh IPv4 allocation. For example, ARIN's general IPv4 pool was depleted in 2015; its current request page describes waiting-list and specific reserved-pool routes. A transfer or leasing arrangement may be the practical path for your deployment.

Do I need an ASN for a static public IP?

Not for a typical provider-supplied static IP. Your provider routes that service. For an independent network or portable block, decide with your network team and upstream provider whether you will originate the prefix yourself or have the provider do it.

Will a static public IP make my connection more secure?

Its main benefit is a stable address for uses such as allowlists, site-to-site connections or hosted services. It does not replace access controls, updates or a firewall, and it does not bypass an ISP's traffic restrictions. Choose it for the connection your application needs.

Can I keep a purchased IPv4 block forever?

Think beyond the transaction. Continued use depends on the applicable registry relationship and how the resources are operated. Compare the rights, support and renewal arrangements behind your choice, alongside the acquisition price.