If you have ever configured a router, you will have seen that the gateway is defined by an IP address like 192.168.1.1. This is called a Class C IP address, within three different blocks where this format occupies the last possible case. So, what is the address 192.168.1.1? Here it is explained.
We have to go back to 1996 to recall the time when the Internet Engineering Task Force (IETF) was forced to determine the range of IPv4 addresses for internal use, i.e. the assignment of IP addresses internally within a closed network . These IP addresses are not available on the public Internet, but within local networks. Well, the first thing you should know is that you can connect up to 253 devices to a router within your home network according to the 192.168.0.x configuration.
The IP addresses, in terms of their allocation, are limited by a number: 4.294.967.296 IP addresses. And if each device on the Internet used its own IP address, obviously, we would run up of the available IPs really fast, for many years now. Yet, the number of devices on the Internet far exceeds this figure. In this way, three blocks of IP addresses were reserved for local networks:
10.0.0.0 – 10.255.255.255 (Class A) – 16,777,216 addresses.
172.16.00 – 172.31.255.255 (Class B) – 1,048,576 addresses.
192.168.0.0 – 192.168.255.255 (Class C) – 65,536 addresses.
Considering these possible cases, a home router is even more limited, with a range of 192.168.0.x, where the last digit is the only variable between 0 and 255. Here, one of the addresses is assigned to the network and another to the broadcast , Then there are 253 possible assignments.
More than 253 IP addresses?
If you are going to connect more than 253 network devices simultaneously, which is unlikely, we can choose any of the other two IP address assignment formats, for which we need to change some aspects of the network configuration. The smaller the network in this regard, the easier it is to maintain it. Therefore, this above explains why IP addresses are 192.168.1.1 in the area of local networks, although we know that you can expand the possibilities.