function randomIntForIP(min: number, max: number) {

    min = Math.ceil(min)

    max = Math.floor(max)

    return Math.floor(Math.random() * (max - min + 1)) + min

}

​

function randomNextNumber(numbs: number[]): number {

    const max: number = Math.max(...numbs)

    const min: number = Math.min(...numbs)

    const nextNumber: number = Math.floor(Math.random() * (max - min + 1))

​

    return nextNumber

}

​

export function randomIpAddress(): string {

    const ipLengths: number[] = [1, 2, 3]

    const ipTypes: string[] = ['A', 'B', 'C']

    let ip: string = ''

​

    switch (ipTypes[randomNextNumber(ipLengths)]) {

        case 'A':

            ip += randomIntForIP(1, 126)

            for (let i = 0; i < 3; i++) {

                ip += '.' + randomIntForIP(0, 255)

            }

            break

​

        case 'B':

            ip += randomIntForIP(128, 191)

            ip += '.' + randomIntForIP(0, 255)

            for (let i = 0; i < 2; i++) {

                ip += '.' + randomIntForIP(0, 255)

            }

            break

​

        case 'C':

            ip += randomIntForIP(192, 223)

            for (let i = 0; i < 2; i++) {

                ip += '.' + randomIntForIP(0, 255)

            }

            ip += '.' + randomIntForIP(0, 254)

            break

​

        default:

            return

    }

​

    return ip

}