Subnet Methods | Joa Documentation

Method / Property	Returns	Description
`subnet.network`	`String`	Network address string (e.g. `"192.168.1.0"`)
`subnet.mask`	`Integer`	Prefix length (e.g. `24`)
`subnet.split(prefix)`	`List`	Splits into all equal `/prefix` sub-networks
`subnet.contains(ip)`	`Bool`	Whether the given IP is inside the subnet

let zone = 10.0.0.0/8

print(zone.network)          // 10.0.0.0
print(zone.mask)             // 8

// Split into /10 subnets
let quarters = zone.split(10)
print(quarters[0])           // 10.0.0.0/10
print(quarters[1])           // 10.64.0.0/10

// Membership via method
print(zone.contains(10.5.1.2))   // true

split() Type Safety

The prefix argument must be an Integer. Passing a String raises a Type Error with a hint:

zone.split("10")
// ❌ Type Error: subnet.split() requires an Integer CIDR prefix (e.g. split(28)).
// 💡 Hint: Remove quotes if you used a string: split(28) not split("28").