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Device policiesAdd IP address spaces

Add IP address spaces

Only Administrators are allowed to add or remove IP address spaces.

emnify safeguards every SIM with a unique static and private IP address accessible through a VPN. Custom IP address spaces extend the available IP address spaces and remove the /24 and /28 limitations.

The /24 and /28 spaces have limited available IP addresses.

A /24 space provides 256 IP addresses. However, the first and last IP addresses are reserved for network and broadcast addresses, respectively, leaving 254 usable IP addresses for devices. Likewise, a /28 space provides 16 IP addresses, 14 of which are usable for devices.

With custom IP address spaces, organizations are assigned /16 IP address spaces by default. A /16 space provides 65,534 usable IP addresses, so making this the default significantly extends the available IP addresses for your devices.

With custom IP address spaces, your organization can:

  • Retain any already allocated IP address spaces.
  • Allocate new IP address spaces from shared (RFC6598 100.64.0.0/10) and the private (RFC1918) address spaces as follows:
    • Private ranges available to device IP addresses are 10.192.0.0/12, 10.112.0.0/12, 10.176.0.0/12, 10.56.0.0/13, 10.136.0.0/13, 10.208.0.0/13, and 10.224.0.0/13.
    • Any shared range is available except 100.64.0.0/24.

By default, you’re assigned /16 IP address spaces in 100.64.0.0/10 (RFC6598) and don’t need to configure it explicitly.

You can’t allocate overlapping IP address spaces, for example, 10.176.0.0/12 and 10.176.0.0/24 or 10.188.33.16/28.

To add a new IP address space, log in to your emnify account and follow these steps:

  1. Navigate to Device Policies and go to IP Address Space Management.
  2. Click Add new IP address space to open the modal.
  3. In the IP Address Space field, enter the range you want to allocate. The field contains a provided network prefix by default, but you can customize it.
  4. Review and click Apply.

Some organizations choose from a predefined list of 10 IP address spaces instead of entering a custom range. If you see this list after clicking Add new IP address space, follow these steps:

  1. Navigate to Device Policies and go to IP Address Space Management.
  2. Click Add new IP address space.
  3. Choose one of the predefined spaces and select Apply.

Once added, you can see the count of IP addresses allocated to your devices and the number of available IPs in the space.

The status reads Not in use until an IP is assigned. Once assigned, the status changes to Assigned to devices. You can’t edit or remove the IP address space if your devices use it.

Remove an IP address space

To remove an IP address space, disassociate all IP addresses from your devices. Then, follow these instructions:

  1. Find the space you no longer need in the IP Address Space Management section.
  2. Click Delete.