Page Text: Tablet : 192.168.0. 98
The ranges of private IP’s
Unlike public IP addresses, private ones are assigned a range based on the type of network that we will see next. Public IP addresses are free, anyone can touch you:
Class A range : 10.0.0.0 to 10.255.255.255.
Class B range : 172.16.0.0 to 172.31.255.255.
Class C range : 192.168.0.0 to 192.168.255.255.
CLASS A : Used for gigantic networks , such as those of international companies. The first block of the address is used to identify the network, while the other three blocks are used to identify the devices (xxx.yyy.yyy.yyy). This allows us to create up to 126 different networks and have a maximum of 16,777,214 computers connected per network.
CLASS B : Used by medium-sized networks, such as a university or institutions of similar size . It uses the first two blocks to identify the network, while the remaining two are used to identify connected devices (xxx.xxx.yyy.yyy). This allows us to create a greater number of networks, but fewer computers connected per network (16,384 networks and 65,534 computers).
CLASS C : Those that 99% of the population use. They are reserved for small home networks . The first three blocks are used to identify the network and the last one as a device identifier (xxx.xxx.xxx.yyy). This makes us have even more different networks, but fewer computers per network (2,097,152 networks and 254 computers per network).
Then there are other types of ranges, but we will not see them. If it is already difficult to see those of class A and B, the D and Y even more. As I said before, class C are the ones we see daily and start at 192.168.XX
You have to be very clear that your private IP address is totally different from the public IP address. The latter will only be used when you go surfing the Internet.
And what is the netmask?
The netmask allows the same IP address to be used for two devices. For example, you could have the address 192.160.0.1 under two different masks making them serve to identify both. The masks are also those that allow to separate the networks in the different categories that we have already explained. The netmask is the one that dictates how many networks can be created and how many hosts can exist according to the kind of private IP we have. Remember that we already know what the types of IP classes are, we saw them above. As a general rule and sure that you have seen it thousands of times, the main network mask that exists is 255.255.255.0 , which is the one assigned to type C networks .
For class A IP addresses : 255.0.0.0
For class B IP addresses : 255.255.0.0
For class C IP addresses : 255.255.255.0
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Without entering into a lot of very technical data or the reason, blocks 255 represent the amount of networks that can be and the numbers 0 how many hosts there can be . It is not that there can be 255 networks and 0 hosts. That is the human translation so that we can understand that if we translate 255.255.255.0 to binary code, it will be such a code: 111111111111111111111100000000 . Would you remember that number of bits of the binary code? Those 1 and 0 are the ones that dictate the type of network, the limit of networks that may exist and the hosts that may exist .
For example, for not complicating the thing much: we know that the net mask 255.255.255.0, translated into binary, has eight (8) zeros (0). Ergo if we raise two (2) to eight (8) we get 256. That 256 is the number of devices that may have connected to the same network. Well, we should know that although theoretically there are 256 opportunities, in practice we have 254 since, for example, we use one for broadcast , which is usually 192.168.1.255 .
Keep in mind that we have simplified these masks. There may be masks with numbers other than 0 or 255, such as: 255.252.0.0, 255.255.255.128, etc.
What are IPv4 and IPv6 IP addresses?
If already explaining what IP addresses are a bit messy, imagine when I explain now what IPv6 addresses are . As it turns out, IPv4 addresses are what we have been seeing now and IPv6 addresses are a new type of protocol that comes to replace IPv4 because there are almost no IPv4 addresses left and you have to jump to IPv6 addresses. We are not going to go into much matter, I just want to leave as a curious fact:
While IPv4 supports 4,294,967,296 (2 32 ) addresses, which is just under 4.3 billion, IPv6 offers 3.4 x 10 38 (2 128 ) addresses, a number similar to 6.67126144781401e + 23 IP addresses for each square meter on the surface of the Land.
Curious, right? IPv6 addresses are the future. Well, rather the present already. Its composition is different from that of IPv4 addresses, since the former play with alphanumeric characters . Therefore, the combinations are endless.
How can I find out what my IP address is?
If for some reason you need to know what your public IP address is, we, who always help customers and non-customers, explain it step by step. You can use one of our tools that tells you at all times what your IP is. To do this, access this page. Upon entering, a little below, you will see your public IP:
How can I know my private IP address in Windows?
On the contrary, in this case you need to know what your private IP address is in Windows . Unlike to know the public, this process requires a somewhat more complex path. But it is not difficult, just follow the steps you will see below. We will use Windows 10 although in Windows the form is common in all its versions. On Linux or Mac, these are other steps, which we will see later.
Steps to know the private IP address in Windows
Indicate in the search engine or in ‘ Cortana ‘: EXECUTE or press the Windows symbol and, keeping it pressed, press the «R» key (without the quotes). Click on the result and a box will open .
Write in that box: CMD
Press ENTER or click OK. A small black box will open with the cursor ready to write.