olemus
IP-aadressi algusosa, mis identifitseerib võrku ja alamvõrku
= the part of an IP address that identifies the network portion whereas the remaining part identifies the host portion

ülevaateid
https://medium.com/netdevops/what-are-network-prefixes-e1923a1d6a3e

https://www.freesoft.org/CIE/Course/Subnet/5.htm

https://blogs.infoblox.com/ipv6-coe/when-is-an-ipv6-address-an-address-and-when-is-it-a-prefix/

https://www.juniper.net/documentation/en_US/junos/topics/topic-map/security-interface-ipv4-ipv6-protocol.html

standardid
https://tools.ietf.org/html/rfc3021
https://www.rfc-editor.org/rfc/rfc6296.html
https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml
https://www.rfc-editor.org/rfc/rfc9136.pdf

vt ka
- klassadresseerimine