Each NRENs used their IPv6 subTLA allocation. DANTE obtained an IPv6 subTLA for the pan- European IPv6 research backbone - divided into 6NET and GÉANT and other IPv6 purposes.

The IPv6 subTLA assigned to Dante is 2001:0798::/35. From this IPv6 address space a sub-section was used for 6NET. The allocated 6NET address space was ‘2001:0798::/40’.

The 6NET available address space ‘2001:0798:0::/40’ was divided into logical sub portions to facilitate future expansions and enable simpler summarisation rules when required.

The address range can be seen as:

For 6NET, the 5 bit <project> part consists of all zeroes. Other <project> allocations will be made by DANTE.

To summarize, the assigned IPv6 address consists of the following parts:

Structure = <xyz>.<PoP>.<SLA>

Where:

<xyz> = <40 bit provider prefix> = 2001:0798::/40
<PoP> = assigned address range per PoP
<SLA> = segmentation of use within the PoP
SLA =Site Level Aggregate