Plenty of hosts will sell you "multiple dedicated IPs" and then hand you a consecutive run out of one block. Every address is technically yours, and every address still ends in the same three numbers. Ours do not: the third octet changes between sites, and on the European pool so does the city.
Why the third octet is the one that matters
An IPv4 address reads left to right, widest to narrowest. The last number distinguishes one machine from its neighbour on the same wire, which is to say, it distinguishes almost nothing. The third number is the first point at which two addresses stop belonging to the same block. That is the boundary a reputation list, a spam filter or a curious competitor looks at when deciding whether two sites are related, and it is the boundary this product is built around.
The honest version, because it is worth stating plainly: IP diversity is not a ranking factor you can point at in any documentation. What it is, is the removal of a shared liability. Sites that answer from one block share a reputation history, share the fallout when a neighbour gets blocklisted, and share an obvious pattern. Spreading them across non-consecutive blocks does not manufacture authority: it stops one bad address from spending the authority the others earned.
What "dedicated" means here
Each address in your order is assigned to your account and to nothing else. It is not a shared front-end IP with virtual hosts behind it, and it is not recycled between customers while you hold it. Every domain gets its own ns1 and ns2 records pointing at your own addresses rather than at a provider nameserver that a thousand other sites also announce, because private nameservers are usually the giveaway that survives after somebody has carefully diversified the IPs and forgotten the DNS.
Allocation is handled through the IP Manager tool inside WHM, so moving a site from one address to another is a two-minute job rather than a support ticket. That matters more than it sounds: networks change shape, clients leave, and an address you would rather not keep using is easier to abandon when swapping it costs nothing.