What is the difference between an allocation and an assignment?

An allocation is the address space that the RIPE NCC sets apart for an LIR’s future use.

RIPE NCC  ⇨ LIR

An assignment is address space taken by an LIR from their allocation and given to an End User or used in the LIR’s own infrastructure.

LIR ⇨ End User or LIR ⇨ itself

 

LIR’s Allocation e.g : /19

definition