You will receive an assigned block of IP addresses whose minimum size is /24 for IPv4 (256 IPv4 addresses) and /48 (65,000 networks /64) for IPv6.
In the next step it is necessary to make the assigned block (prefix) accessible (propagation) by BGP protocol. This will make IP addresses available across the Internet.
Address propagation to the Internet can provide your Internet service provider, or you can provide it yourself by your own BGP router – for more information, see the section Technical aspects and BGP.