specify

To match a unicast IPv4 address (without specifying a port) using a regular expression (regex), here’s a solution that considers valid unicast IPv4 addresses.---Regex Rule\b((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\b---...