Home Router – Class-B Private IP Address – Class-B Private IP Address

by stacy can be used as a private IP address. This is similar to the 192.168.x.x and 10.x.x.x addresses you may see more often. This article will cover everything you need to know. This article will explain what devices use it and how they can use it as a default gateway. It also explains how to set up devices using this default IP. Finally, it will show you how the address is assigned to clients as an IP address.

IP Addressing Basics

An IP address is used to identify devices in networks. These IP addresses are used to identify devices on networks.

Each entity that connects to a network needs a unique address. If it doesn’t have it, it won’t be able to connect to the network that it wants. Is it not unique? If you have two entities on the same network that share an IP address, you’ll have trouble. They won’t be able communicate with other devices on that network even if they don’t get disconnected.

Everyone on a network must have an IP address that is unique to each one. These addresses are now on the list. Let’s see how they look!

General Form

An IP address is basically a combination of zeros (or bits) and ones. To be exact, 32 bits. Each of these bits is divided into 4 segments. Each segment is called an octet, and each one contains 8 bits. This form is defined precisely by the IPv4 protocol. It is basically the Constitution for IP addressing. It does not only define the form of an IP address but all of the rules involved in IP addressing.

Every IP address can also be represented in binary form (the one that has zeros and ones), as well as a decimal form. A decimal form can be described as a sequence of four numbers, not just zeros or ones. You see the similarities? Binary form – four octets, decimal form – four numbers. To convert each octet to a number, you will need to create a decimal form. Eight zeros (00000000) converts to zero. Eight ones (11111111) converts into 255. Any other combination between 1s and 0, is any number between 0 to 255.

In the picture below, you can see our address –, in decimal and binary form.

All of our laptops, PCs, routers, and access points see IP addresses as bits – they use binary form. This is how they work. When we deal with IP addresses, we put them in decimal form because it’s easier to do so.

This is the last step. Let’s see how many addresses there are now. You can make 232 different IP addresses with 32 bits. If you want, you can have almost 4.3 billion address. A lot, right? It’s not enough. Why? There’s a reason why we haven’t told you how many devices connect to the internet every day. How many people are there? This is what’s wrong. Every thing that connects to a network must have a unique address, but you don’t have enough addresses to give a unique address to every device that connects to a network. The internet is the largest network in the world. If you’re in a tricky situation, there’s a simple way out. We’ll talk about it in a second. Until then, let’s learn about how IP addresses are broken down into different types.


There are five classes of IP addresses. These classes are listed in the table below. IP addresses belonging to different classes can be used for different purposes. Networks can use addresses belonging to classes A, C and B. Large networks with many clients can have class A addresses. That’s why the number of class A addresses is the largest (half of all the IP addresses). Medium and small networks use Class B and C addresses. Class D addresses are for multicast and class E is for future use experimental.

A, B, and C addresses are given to different regional registries by the Internet Assigned Numbers Authority (IANA). These registries are: ARIN for the United States and Canada; APNIC for Asia/Pacific; LATNIC for Latin America; RIPE NCC for Europe, Central Asia, and Middle East. These regional registries make available addresses for national and local registries. These addresses are often allocated to customers by local internet registries, which can also be used for internet providers.

Knowing this classification and the allocation procedure will help you identify where and for what purpose your address is used.

All the available addresses were first divided into 5 classes

Both public and private addresses

We talked about how IP addresses are classified, and this helps with the process of giving out IP addresses to different registries and keeping them in order. It doesn’t help us solve the problem we talked about. IP addresses are still hard to come by, and we can’t make new ones with just 32 bits.

One way to solve the problem is to start over with a new protocol. This protocol already exists (it’s called IPv6), but it’s very complicated to set up and will take years, maybe decades, to do.

Other options were to continue to use the existing IP addresses and to make changes to permit us to use different addresses or one address on multiple devices. This would not violate the rule that each device/entity should have its own unique IP address.

So, we created blocks of private addresses. You have three blocks – Class A, Class B, and Class C. These blocks can only be used on LAN networks. The LAN network could be your home wi fi network, office network, school network, campus network etc. Each device connected to your home network will have a private Internet address. But these devices can’t use private addresses for internet access. They are used only for communication within the LAN. They are used to communicate between your router and other devices on the same network. What allows your devices to go online?

The router is the secret to unlocking the trick. Your router has an IP address. This address is assigned by the manufacturer. The router has a built in DHCP server. This is an instrument that assigns addresses for all devices connected. All these addresses are private, and they all belong to the same subnet as the router’s default IP.

they all belong to the same subnet as the router's default IP

Our routers don’t have just one address – they have two. The default IP (private) is the first address, while the public IP address is assigned by your internet service provider. All your computers, laptops and phones. You can send them a request for web access. The router will then use one public IP address to grant web access to all of your devices.

Every private address can be used an unlimited number of times, but can’t be used by multiple devices on the same LAN at the same time.

Can be my default gateway? How can I locate my default gateway

This address is a Class-B private IP address – it belongs to a dedicated block of private IP addresses within class B. cannot be used as a private IP address. It can only work on LAN networks. It can be an address that is assigned to your computer, printer, or phone (aka client IP address), but it could also be an address that is associated with your router, access point or wi-fi extender or any other network device.

This address is not the most popular option for default IP addresses. Class B private addresses are generally not used as default gateways. More popular are Class A addresses (,, and Class C addresses ( and 192.1168.1.1).

If you don’t know your default IP and want to find it, read our detailed guide on how to do it using your PC, Mac, iOS, or Android device.

What devices use Default Gateway?

This address is not used by many devices as their default gateway. Bellnet Technologies and Top Global were the only companies that used this address in past. Both brands used to assign old router models to both:

Bellnet Technologies: MB7900 Wireless Router

Top Global: MBH8600, MBH6800, MBH8000, and MB6000 (wireless routers).

In this case, you can use to get into your router’s configuration manager and make changes to your network settings. There’s nothing complicated about it. You just need to open a web browser and enter this address. Then, you need to log in with your router’s credentials (username and password).

Can serve as a Client IP Address

Theoretically, could be a client address just as any private IP address. It must be part of a DHCP pool that also includes in order to make it a client address.

A DHCP pool refers to a range of addresses that a DHCP servers (your router) assigns devices to your network. The default pool addresses all belong to the same subnet and default IP as your router’s. The only way to make available is for your router to have a default IP from the same subnet. If, for instance, our default IP address was, or any other address in the Subnet, then might be an available address.

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