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IP Address Structure Explained (IPv4, Subnet Mask & Examples)

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For those familiar with IT and technology, IP is a common term. However, not everyone understands the structure of an IP address or the types commonly used. Here’s an informative overview from Antidetect Browser Hidemyacc.

1. What is an IP address?

An IP (Internet Protocol) address is a unique identifier assigned to each device connected to a network, such as a phone, computer, or server. It allows devices to communicate with each other over the internet.

If you’d like a more detailed explanation of how IP addresses work, you can check out our full guide on what an IP address is.

IP Address Structure
IP addresses allow devices to access the Internet

2. Structure of an IP Address

An IP address is made up of four numbers separated by dots, such as 192.168.1.1. Each number (called an octet) ranges from 0 to 255 and represents a specific part of the address.

This structure allows an IP address to be divided into two main components:

  • Network ID (NetID): identifies the network that the device belongs to
  • Host ID: identifies the specific device within that network

For example, in the IP address 192.168.1.1, the first three numbers often represent the network, while the last number identifies the device. This structure makes it possible for many devices to communicate within the same network without conflicts.

2.1. Subnet mask

A subnet mask is used to determine which part of an IP address refers to the network and which part refers to the host.

It has a similar format to an IP address. For example, a common subnet mask is 255.255.255.0.

In simple terms, the subnet mask acts like a “filter” that separates the network portion from the host portion of an IP address.

Example:

  • IP address: 192.168.1.1
  • Subnet mask: 255.255.255.0

In this case:

  • The first three numbers (192.168.1) represent the network
  • The last number (.1) represents the device (host)

This means all devices within the same network will share the same first three numbers, while each device will have a unique last number.

Subnet masks are important because they help networks organize devices efficiently and ensure that data is routed correctly between them.

IP Address Structure
Subnet mask helps you distinguish netid and host ID

2.2. IP address classes

IP addresses are also divided into different classes, which were originally designed to support networks of various sizes.

Each class determines how the IP address is split between the network and host portions.

Main IP classes:

  • Class A: Designed for very large networks with a large number of devices
  • Class B: Suitable for medium-sized networks
  • Class C: Commonly used for smaller networks, such as home or office networks
  • Class D: Used for multicast communication (sending data to multiple devices at once)
  • Class E: Reserved for research and experimental purposes

Although IP classes are not widely used in modern networking (due to more flexible methods like CIDR), they are still useful for understanding how IP addressing works and how networks are structured.

3. Common Types of IP Addresses

IP addresses are classified for use with different methods. Here are some common IP types:

  • Public IP address: is a type of public IP address that allows all devices to connect to the Internet. This type is often provided by ISP service providers, and usually does not change the address.
  • Private IP Address: is a type of private address used to distinguish devices on a LAN. An IP can only be used by one device, so the Router will help distinguish the address for the device.
  • Static IP Address: is a type of address with a fixed configuration that does not change over time. It is used for devices or servers that need a fixed address. Static IP allows users to remotely control the Internet and contains information about the device.
  • Dynamic IP Address: It is a dynamic address type so the IP address changes over time. In addition, it is also automatically broadcast by the DHCP server, often used for local or personal devices to the Internet.

>>> Learn More: Step-by-Step Guide to Connecting Data Across Two Devices

4. Types of IP Addressing Based on Transmission Method

IP address structure divided into 3 different types depending on data transmission formulas. 

4.1. IP Unicast

This is the address of a device, used in one-to-one transmission applications between two devices. IP Unicast is commonly used because it can send and receive data. This type is built-in for IPv4 and IPv6.

IP Address Structure
Machine A uses the Unicast IP of machine B to transmit data

4.2. IP Multicast

IP Multicast is widely used in one-to-many transmission applications, meaning one device sends to many different devices. The message will be sent to the group address. 

Routers forward copies of packets whose host ports have registered addresses. Only the server that needs to receive the message will have the information, the rest will be deleted by the LAN.

IP Address Structure
R1 sends multicast information packet, R2 will receive the information and read it

4.3. IP Broadcast

IP Broadcast is used when one device sends information to all devices in the same broadcast area. The IP address will have the host bits. 

IP Address Structure
R1 sends information to devices, servers A and B receive and process the information

>>> Learn More: IPv4 address Explained: Everything You Need to Know

5. How to Check an IP Address?

A computer needs to be identified by its internal IP address and public IP address. Here are some ways to check IP addresses:

5.1. How to check internal IP address

Method 1:

  • Step 1: Open Control Panel on Start Menu.

  • Step 2: Access View network status and tasks.

  • Step 3: Click on the network currently in use, click Details.

  • Step 4: Note the IPv4 Address because this is the internal address in the system.

Method 2:

  • Step 1: Select the combination W + R to open Run. Enter CMD.

  • Step 2: Enter the command “ipconfig” to look up the IP. Note the IPv4 Address line.

5.2. How to check Public IP address

Currently, there are many software to help you check IP address structure Public effectively and quickly. You can visit the website https://www.whatismyip.com/ or https://ipfighter.com/ to look up. Besides, the system also tells you where you are on the map as well as who the supplier is?

6. How to hide IP address with Proxy

Proxies are known as intermediary servers that help users hide their real IP addresses. When making money online, you can use Proxies to support creating and managing multiple accounts is a popular and effective method. 

If you need to change your IP address to increase security and access blocked websites, you can use Proxy Server in combination with Antidetect Browser Hidemyacc. With the support of Hidemyacc, you can access and manage many different accounts. Antidetect Browser Hidemyacc will allow you to change parameters such as IP address, browser, OS, screen resolution, device memory,... and more than 15 other parameters to avoid being detected by the website. 

Combine proxy with Antidetect Browser Hidemyacc
Combine proxy with Antidetect Browser Hidemyacc to protect your multiple accounts

Hopefully the above article helps you understand better IP address structure as well as common types of IP addresses. Additionally, with Hidemyacc's support, changing IP addresses and managing multiple accounts is easier than ever. Hidemyacc allows users to use utilities for FREE within 7 days to improve customer experience. Please contact us for the fastest advice and support.

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