Knowledge Base

Extra IPv4/IPV6 IPs - What are the costs on VirtFusion-based VPSes?

Can I have more IPs? (Updated 16-01-2026)

We have now reviewed this article on January 16th to update the availability of IPv6 IPs on a situation where a full IPv4 is used: it is now possible to have a dual-stack VPS, where you get a full IPv4 as a add-on and you don't lose the IPv6 IP.

At present, our primary network implementation depends on the dedicated server, and also depends on the primary type of network addresses present. As of 05-01-2026, two primary network stacks exist concurrently on our VirtFusion implementations: Libvirt NAT (primarily for NAT IPv4), and MacVTap (primarily for full public IPv4). At C-Servers, IPv6 can use any of the two.

MacVTap (bridged) is the recommended direct approach by VirtFusion and is always implemented by C-Servers whenever possible and feasible, in situations where full IPv4s are expected for a given Package, Add-on, or global dedicated server. If you have a full IPv4 or full dual-stack on your VPS, you're using MacVTap. 

Libvirt NAT (routed) is a networking approach primarily executed on situations where networking addresses or market-scaling justify implementing such a platform - and it's used especially for NAT IPv4 purposes, but can also be used for IPv6 in several situations.

As you may have realized by now, these approaches are substantially different, and require a special look at them.

What are the IP attribution policies for your Packages?

Usually, the type of IPs you're getting by default are a nice indicator of what we can or cannot do for your VPS server, at your node.

The types of VPS packages and IP attribution policies for these vary significantly, as follows:

VPS Package with Default IPv4 NAT + IPv6 /64, /80 or /126 » it is not technically possible to have more than one NAT IPv4 IP and one IPv6 IP on your VPS, due to address constraints and networking interface specifics.

It is possible to convert, with an additional cost, to a full IPv4 (via MacVTap) and keep the package, in which case IPv4 will be provided through the primary interface (e.g. eth0), and a second interface will start to appear (e.g. eth1) that usually has the IPv6 provided through Libvirt NAT. Your VPS will have two virtual networking cards: one for IPv4, one for IPv6. Having two network cards is just like having one - your applications will continue to work as normal.

The IPv4 will always have to be on the primary interface (eth0), and the IPv6 will always have to be on the secondary (eth1). It is not technically possible to change this order. All IP changes will demand at least a shutdown of the VPS for up to 15 minutes. 

VPS Package with Default IPv4 NAT, without Default IPv6 » We explicitly avoid, at all times, providing a service without IPv6 by default. However, it could punctually occur, strictly limited to upstream networks that don't even provide an IPv6 (or provide it without adequate peerings), but where we still see some commercial reasonability on providing service like this. It will be rare - C-Servers is an IPv6-first company. 

On these situations, obviously if the upstream allows us to have a full IPv4 - and could tend to allow it - we will provide a full IPv4 via MacVTap, no questions asked, and pricing will tend to be cheaper if we don't have it by default, but as an add-on.

Regarding IPv6, it may either be provided optionally on a separate interface, a manual request which is handled via ticket, or not be available at all. Your product description will state whether optional IPv6 is available or not. On these particular servers, in order to activate IPv6, an exceptional one-off cost of 5 USD will apply for the manual IPv6 activation for a given user, with no limit to the number of IPs or VPSes to handle on a single ticket - it's not the IPv6 that is being paid, it's the human manual allocation. 

The IPv4 will always have to be on the primary interface (eth0), and the IPv6 will always have to be on the secondary (eth1). It is not technically possible to change this order. All IP changes will demand at least a shutdown of the VPS for up to 15 minutes. 

VPS Package with Full IPv4 + Full IPv6 » both are always possible to provide extra. IPv6s are provided without extra cost (a justification is required), IPv4s will have an additional cost.

On this package, all IPs continue to operate on the same network stack and interface.

C-Servers does not provide packages without IPv4.

Extra Costs for IPv4

The following cost applies depending on the supplier of the IP network ranges:

Hetzner Online GmbH - AS24940 - Zeta Series (Zeta.8, Zeta.9, etc), for Germany and Finland
Each /32 IPv4 (1 Additional Full IPv4): 2,59 USD per month + 9 USD setup fee
/29 and higher - 

PebbleHost Ltd - AS212027 - Zeta MultiGigabit Series in Coventry, UK
Each /32 IPv4 (1 Additional Full IPv4): 3,69 USD per month + 12 USD setup fee
/29 - 19,90 USD per month + 36 USD setup fee
/28 - 45,90 USD per month + 48 USD setup fee
/27 - 90,90 USD per month + 48 USD setup fee

DartNode - AS399646 - Zeta Series in the USA
not available

Interserver - AS19318 - Zeta Series in the USA
not available

Centerfield Ltd - AS214566 - Alpha Series (Coming Soon)
Each /32 IPv4 (1 Additional Full IPv4): 2,59 USD per quarter (= 0,863 USD/month) + 3,50 USD setup fee
/29 IPv4 (8 IPv4s, 5 usable): 6,90 USD per month + 10 USD setup fee
/28 IPv4 (16 IPv4s, 14 usable): 13,90 USD per month + 19 USD setup fee
/27 IPv4 (32 IPv4s, 30 usable): 25,90 USD per month + 29 USD setup fee
/26 IPv4 (64 IPv4s, 62 usable): 54,90 USD per month + 59 USD setup fee
/25 IPv4 (128 IPv4s, 62 usable): not offered due to IP space management
/24 IPv4 (256 IPv4s, 254 usable): 199 USD per month + 290 USD setup fee*

* available only on MultiDedi Virtual Server and MultiDedi Dedicated Server offers where the product description states "C-Servers /24 Subnets Available".