What is the difference between ipv6 /48 and /64?

Question

Computer networks

Hello.

What is the difference between ipv6 /48 and /64?

I ask because the prices differ. Subnets / 64 are allocated for free, for / 48 they ask for money. Plus social networks /64 send very quickly to the ban.

And how to visually distinguish an address from /48 from /64?

Answer 1

\64 - Total addresses: 18,446,744,073,709,551,616
\48 - Total addresses: 1,208,925,819,614,629,174,706,176

Answer 2

And how to visually distinguish an address from /48 from /64?

No way. Subnets exist in the routing phase. If you do not have a direct route to the subnet, then you cannot assert that the address belongs to the subnet.
What subnet does 165.10.43.33 belong to? IPv6 is no different in this regard.

Answer 3

This is the subnet size, not the address.
Any case, it doesn't matter what subnet size the IP address is from

Answer 4

Read the RIPE policy . In short, /48 is issued to providers or LIRs (it is necessary to accompany the entry in the RIPE database), /64 are issued just like that to the final host.