The IPv6 address space is so huge, I, as an individual, was able to get a /44 no questions asked. Back in the 90's, I was able to get a IPv4 /24, no questions asked.
I have a /32 as an individual that I also got no questions asked.
It’s more IPv6 space than I could ever use.
However, IPv6 space has to be measured in /48s, and IPv4 in /24s, as those are the smallest possible BGP announcable blocks.
With IPv6 there's also an unwritten rule that RIRs will only assign blocks ending on a nibble boundary (with the exception of RIPE and their /29s that they expand by one bit every time you run out).
So a /44 is on the second smallest nibble boundary, making it the second smallest allocation possible.
Well, if the VPSes are in seperate sites, at least one per VPS, which means at least 2, which means that according to allocation policies, at least a /44. :)