In IP networking, a private network is a network that uses private IP address space. Both the IPv4 and the IPv6 specifications define private IP address ranges. These addresses are commonly used for local area networks (LANs) in residential, office, and enterprise environments.

IP Lookup: No more unknown IP addresses An IP lookup tool does a reverse DNS lookup to help you find the hostname of any IPv4 address (or find the IP address of a particular hostname or domain name) along with ownership geolocation details. If you’re seeing random IP addresses poking around your firewall trying to gain access to your network definitely, it raises a red flag. IPv6 address - Wikipedia An Internet Protocol Version 6 address (IPv6 address) is a numerical label that is used to identify a network interface of a computer or a network node participating in an IPv6 computer network and for locating it in the network. IP addresses are transmitted in the fields of the packet header to indicate the source and the destination of each network packet. IP Subnet Calculator

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IPv4 - Wikipedia Internet Protocol version 4 (IPv4) is the fourth version of the Internet Protocol (IP). It is one of the core protocols of standards-based internetworking methods in the Internet and other packet-switched networks. IPv4 was the first version deployed for production in the ARPANET in 1983. It still routes most Internet traffic today, despite the ongoing deployment of a successor protocol, IPv6. IP addresses are assigned to a host either dynamically as they join the network, or persistently by configuration of the host hardware or software. Persistent configuration is also known as using a static IP address. In contrast, when a computer's IP address is assigned each time it restarts, this is known as using a dynamic IP address.

IP is short for “Internet Protocol”. An IP address basically lets you know that you are now connected to the internet. It is one of the most basic requirements in a network and no network can be designed without the facility to provide IP addresses to track every computer and device that connects to it.

What's the difference between a dynamic and static IP address? Which do I have? Which should I have? Find out the answers here.