It is actually objectively speaking a bit crazy that /64 has become standard - which is really a relic of the early days when ISPs started handing out IPv6 - as that is a whopping 18,446,744,073,709,551,616 addresses :)
With that said, due to this legacy, today most people online are identified by the /64 they belong to - so /64 has become the smallest subnet for identification purposes. Say, when Google tries to find out where/who you are when visiting their services, their resolution will not go below the /64 you are in
For this reason, on all our newer IPv6 ranges all our customers are actually placed in their own unique /64
Also, about 99%+ of our customers never use anything but their single ipv6 address
That is not the reason why we don’t allow more however - the reason has to do with network security and stability. If we give customers access to a larger part of the /64 they are in, it becomes extremely easy to overload network equipment with various types of traffic against such a large IP space.
So the reason why we “only” give you 16 IPv6 as a baseline is partially that almost nobody ever asks for more and second it’s a pretty important security consideration
If you ever find yourself needing more ipv6 space, feel free to reach out to our support and we will see what we can do, depending on your use case.
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Arni Johannesson
Mar 10, 2025
Hi Ron
It is actually objectively speaking a bit crazy that /64 has become standard - which is really a relic of the early days when ISPs started handing out IPv6 - as that is a whopping 18,446,744,073,709,551,616 addresses :)
With that said, due to this legacy, today most people online are identified by the /64 they belong to - so /64 has become the smallest subnet for identification purposes. Say, when Google tries to find out where/who you are when visiting their services, their resolution will not go below the /64 you are in
For this reason, on all our newer IPv6 ranges all our customers are actually placed in their own unique /64
Also, about 99%+ of our customers never use anything but their single ipv6 address
That is not the reason why we don’t allow more however - the reason has to do with network security and stability. If we give customers access to a larger part of the /64 they are in, it becomes extremely easy to overload network equipment with various types of traffic against such a large IP space.
So the reason why we “only” give you 16 IPv6 as a baseline is partially that almost nobody ever asks for more and second it’s a pretty important security consideration
If you ever find yourself needing more ipv6 space, feel free to reach out to our support and we will see what we can do, depending on your use case.