Every server and cloud instance comes with one public IPv4 address. Most people never need more; the ones who do (mail servers, hosting resellers, anything that wants a distinct address per customer or per service) can add a block at checkout or later. This page covers what is included, how additional addresses are ordered, what “usable” means, and how IPv6 fits in.
What is included
- Bare-metal server: one static IPv4 address, routed to the server. IPv6 is available as a free addon on the Edge line and above (a /64 for the server).
- Cloud instance: one IPv4 address, fixed for the plan.
- Colocation: one IPv4 address for the rack space, with the same block options as bare metal.
Every address on the account is listed under IP Addresses in the portal, grouped by the server or instance that holds it, with its prefix length, a primary badge on the main address, and the reverse DNS name. The IPv4 and IPv6 pills filter the list; the search box matches on address, hostname or reverse DNS.
Ordering more IPv4 addresses
Additional addresses come as a block, not one at a time. On the product page the IPv4 Addresses option in the Network section lists the blocks:
| Block | Addresses | Usable for your services |
|---|---|---|
| /29 | 8 | 5 |
| /28 | 16 | 13 |
| /27 | 32 | 29 |
| /26 | 64 | 61 |
Three addresses in each block are taken by the network itself: the network address, the broadcast address and the gateway. That is why a /29 gives five, not eight. The shop shows the usable count next to each block for that reason.
Which blocks you can pick depends on the server line. The Edge line and everything above it can take any block from a /29 to a /26. The entry line (Express and Instant) takes a /29 and nothing larger. Cloud instances have no IP option at checkout. Prices are on the product page.
On a server you already have, open a support ticket with the server name and the block size you need. The block is routed to the server, added to the service on the next invoice, and appears on the IP Addresses page with its prefix length. The addresses are then yours to configure inside the operating system as additional addresses on the interface.
IPv6
On the Edge line and above, tick IPv6 /64 Allocation among the addons at checkout, or ask for it later in a ticket; there is no charge. A /64 gives the server more addresses than it will ever use, so assign them freely per service. IPv6 addresses appear on the IP Addresses page like the others. Reverse DNS for IPv6 is shown there but is not yet self-service; ask in a ticket and we set it.
Reverse DNS
Every IPv4 address you hold can be given a reverse DNS name from the IP Addresses page, without a ticket. Mail servers in particular need one that matches the sending hostname. The how-to is at set reverse DNS for your IPs.
Your own address space
If you hold your own IPv4 or IPv6 prefixes, or your own ASN, you can announce them on our network without running a router. That is a different arrangement from ordering a block and is described in bring your own IPs and ASN. A whole subnet leased from us (a /24 or larger) can also have its reverse zone delegated to your nameservers; ask in a ticket.
Questions we get
- Can I order a single extra address? No; the smallest unit is a /29 with five usable addresses.
- Can I move a block to another server? Yes, within the same location. Open a ticket naming both servers; the block is re-routed and the IP Addresses page follows.
- The new block does not answer. The addresses are routed to the server, but the operating system does not use them until you configure them. Add them to the interface that carries the primary address, using the gateway shown for the block.
- Do additional addresses have DDoS protection? Yes, the same protection as the primary address.
- Can I get a block for a cloud instance? Not at checkout. Ask in a ticket and we tell you what is possible for that plan.