by Daniel M (8 Submissions)
Category: Coding Standards
Compatability: VB Script
Difficulty: Beginner
Date Added: Wed 3rd February 2021
Rating: 
(4 Votes)
Checks if string is a valid IP or not. I saw this submitted earlier and made my own better version of it. =)
OK there is now an updated version with fixes so go check it out here:
https://vbcoders.com/vb/scripts/ShowCode.asp?txtCodeId=57999&lngWId=1&txtForceRefresh=123020041845765523
VBcodersPrivate Function IsIP(strIP As String) As Boolean
Dim splitIP() As String, i As Long
IsIP = True 'Starts out as true
splitIP$ = Split(strIP$, ".", -1, 1) 'Split IP to check value
'==============================================================
'Things we must check to verify IP
'1. Make sure each section of IP is not greater than 255
'2. Make sure each section of IP does not contain a negative
'3. Make sure each section of IP is numeric
'==============================================================
For i = 0 To UBound(splitIP$) 'loop through array and check 3 things
If IsNumeric(splitIP(i)) = False Then
IsIP = False
Exit For
Else
If splitIP(i) > 255 Or splitIP(i) < 0 Then
IsIP = False
Exit For
End If
End If
Next i
End Function
