How to order an additional IP network for a Dedicated Server

Additional IP addresses or networks are often used to host multiple services or to implement custom routing and firewall configurations. This article explains how to order them for your dedicated server.

Order additional IP addresses for a dedicated server

To order additional IP-addresses:

1. Log in to the customer portal, navigate to Dedicated Servers → Manage, and select your server
2. Scroll to the Networks section and click Add Network
3. In the Network type dropdown, select Public IP

4. Choose the /32 network size

   A /32 network represents a single IP address, not a range. It is used to assign an individual IP alias to an existing network interface without allocating a subnet, gateway, or broadcast address.

   For more details, see the Network sizes and reserved service addresses section at the end of this article.

5. In the Quantity field, select the number of IP addresses to add
6. Click Add

The additional IP addresses will be provisioned within approximately five minutes.

Order additional networks

On Windows servers, only alias IP addresses can be allocated. Ordering a full public subnet is not supported.

To add a new network:

1. Log in to the customer portal, navigate to Dedicated Servers → Manage, and select your server
2. Scroll to the Networks section and click Add Network
3. In the Network type dropdown, choose one of the following:
   • Public IP
   • Private IP
   • Public IPv6 (can be assigned to a server only once; not available in locations with reduced redundancy)
4. Select the desired subnet size (for example, /26, /27, /28, etc.)
   Smaller prefixes (such as /26) offer more usable IP addresses, while larger prefixes (such as /29) provide fewer addresses (see more details below).
5. Click Add

The new network will be provisioned within approximately five minutes, depending on the number of networks being provisioned.

Network sizes and reserved service addresses

The available network sizes depend on the type of location and the network architecture at that location. The network size determines the number of available IP addresses in a subnet. Subnets are used to divide larger networks into smaller segments, allowing for easier management of network resources and increased security. CIDR (Classless Inter-Domain Routing) notation is used to designate blocks of IP addresses and subnet masks, formatted as: IP address / number of bits in the subnet mask.

For example, a /29 prefix indicates that out of the 32 bits of the subnet, 29 bits are used for the network part of the address, leaving 3 bits for hosts. This means the subnet can contain 8 IP addresses:

• 5 can be assigned to user devices and our infrastructure devices
• 1 is reserved for the network address
• 1 is reserved for the gateway on the switch
• 1 is reserved for the broadcast address

Suppose the network IP address is 213.3.172.48, and the network size is /29. In this case, the IP addresses will be allocated as follows:

• 213.3.172.48 – reserved for the network
• 213.3.172.49 – address of the first (r1) switch in the switch group (rbridge1)
• 213.3.172.50 – address of the second (r2) switch in the switch group (rbridge2)
• 213.3.172.51 – address of the virtual switch of the switch group. This address is the gateway address in the network
• 213.3.172.52 – interface IP address (the first available IP address assigned to the server interface)
• 213.3.172.53, 213.3.172.54 – available unused IPs
• 213.3.172.55 – reserved broadcast address of the network

Addresses of private and additional networks are allocated in the same manner.

To ensure redundancy, each dedicated server is allocated two /29 networks: a private and a public network. This provides 3 usable IP addresses, of which we provide only one as a service.

You can order IPv4 subnets of the following sizes in the customer portal, along with the corresponding number of usable IP addresses:

Network size	Total number of IPs	Number of usable IPs
		Standard location	Location with reduced redundancy (marked with the icon)
/32	1	1	1
/30	4	unavailable	1
/29	8	3	5
/28	16	11	13
/27	32	27	29
/26	64	59	61

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