Validate IP address is not 0.0.0.0 or multicast address

javascript

Solution

First you need to get it into a number, use this function:-

function IPToNumber(s)
{
    var arr = s.split(".");
    var n = 0
    for (var i = 0; i < 4; i++)
    {
        n = n * 256
        n += parseInt(arr[i],10)

    }
    return n;
}

Looking at you spec, whilst you seem to list a series of ranges those ranges appear to be contiguous to me, that is can be simplified to (224.0.0.0 to 239.255.255.255). Hence you can test with:-

var min = IPToNumber("224.0.0.0");
var max = IPToNumber("239.255.255.255");

var ipNum = IPToNumber(sTestIP);

var isValid = (ipNum != 0 && (ipNum < min || ipNum > max))

Note of course that without knowledge of the destinations subnet you can't tell whether the address is the network address or the broadcast address for that subnet.

Problem

Original source