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Python program to check if the given string is IPv4 or IPv6 or Invalid

Last Updated : 28 Jul, 2020

Given a string. The task is to check if the given string is IPv4 or IPv6 or Invalid.

Examples:

Input : “192.168.0.1”
Output : IPv4
Explanation : It is a valid IPv4 address

Input : “2001:0db8:85a3:0000:0000:8a2e:0370:7334”
Output : IPv6
Explanation : It is a valid IPv6 address

Input : “255.32.555.5”
Output : Invalid
Explanation : It is an invalid IPv4 address as the 3rd octet value(i.e 555) is greater 255.

Input : “250.32:555.5”
Output : Invalid
Explanation : The given string is invalid as it consists of both : and .

To implement the above problem, we will use the ipaddress module in Python. This module provides the capabilities to create, manipulate, and operate on IPv4 and IPv6 addresses and networks.

Below is the implementation.

from ipaddress import ip_address, IPv4Address 
  
def validIPAddress(IP: str) -> str: 
    try: 
        return "IPv4" if type(ip_address(IP)) is IPv4Address else "IPv6"
    except ValueError: 
        return "Invalid"
  
if __name__ == '__main__' :   
        
    # Enter the Ip address  
    Ip = "192.168.0.1"
    print(validIPAddress(Ip))  
  
    Ip = "2001:0db8:85a3:0000:0000:8a2e:0370:7334"
    print(validIPAddress(Ip))  
  
    Ip = "256.32.555.5"
    print(validIPAddress(Ip))   
  
    Ip = "250.32:555.5"
    print(validIPAddress(Ip)) 

Output :

IPv4
IPv6
Invalid
Invalid

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