They can also be changed, although there’s usually no need to do so.
These internal IP addresses are only used for communication within this network. For example, if your computer and smartphone are connected to the same Wi-Fi network, the internal IP addresses might be 192.168.1.2 and 192.168.1.3, while your router has the standard IP address 192.168.1.1, for example. Internal IP addresses are permanent and, unlike external IP addresses, are not unique worldwide but only within a local network. Your router, in turn, assigns the internet-enabled devices on your network an internal IP address automatically via DHCP (dynamic host configuration protocol), which is also known as a private or local IP address and is not visible to the outside world. There are also static external IP addresses that never change and which are used by internet service, email, VPN, and hosting providers and other web-based service providers, among others. When surfing on your home network, all devices on that network outwardly use the same external IP address, which is not used by anyone else on the planet at that particular time. This is publicly visible on the internet and is usually changed with each new connection or after 24 hours, which is why it’s also called a dynamic IP address. This is your external or public IP address, which the ISP assigned to your home network’s router. Your IP address is displayed at the top of this page, and you can also use other providers’ online services to find it.
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