/
/8 — 255.0.0.0
/9 — 255.128.0.0
/10 — 255.192.0.0
/11 — 255.224.0.0
/12 — 255.240.0.0
/13 — 255.248.0.0
/14 — 255.252.0.0
/15 — 255.254.0.0
/16 — 255.255.0.0
/17 — 255.255.128.0
/18 — 255.255.192.0
/19 — 255.255.224.0
/20 — 255.255.240.0
/21 — 255.255.248.0
/22 — 255.255.252.0
/23 — 255.255.254.0
/24 — 255.255.255.0
/25 — 255.255.255.128
/26 — 255.255.255.192
/27 — 255.255.255.224
/28 — 255.255.255.240
/29 — 255.255.255.248
/30 — 255.255.255.252
✕
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RFC 1918 — Address allocation for private internets
RFC 3021 — Using 31-bit prefixes on IPv4 point-to-point links
IEC 62443-3-2 — Security risk assessment for system design