Difference Between Public and Private IP Address

Edited by Diffzy | Updated on: August 11, 2022


Difference Between Public and Private IP Address Difference Between Public and Private IP Address

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Most people rarely consider the two essential components of your device's identity—public and private IP addresses. However, with the number of people working from home dramatically increasing and cybercrime rising, it's more crucial than ever to comprehend how your device's IP address might be used to identify you online.

Let's first talk about an IP address before getting into what makes one public or private. An IP address, a unique numerical identity, is given to each internet-connected device. IP addresses are the means through which websites and devices connect and by which the information you seek may locate you.

We'll get further into the mechanics of public and private IP addresses in this post, including how they're given, what their ranges signify, and the critical distinctions between them.

Public IP Address vs. Private IP Address

A Public IP address is obtained from the internet service provider and has access to the entire world. In contrast, a Private IP address is one that the network administrator assigns to the devices and is only available within the network. Devices with Public IP addresses can communicate with devices outside the network, whereas those with Private IP addresses can only communicate among themselves.

As implied by the name, a public IP address is accessible to everyone online. The user must buy a unique IP address from the internet service provider in order to communicate with other devices connected to the same network. When security programs do not secure the communication to the network, the address is vulnerable to assaults.

As implied by its name, a private IP address is obscure and less accessible online. To safeguard sensitive data from intrusions, the company gives each machine on the network a private IP address. The administrators distribute multiple IP addresses at no cost. To interact internationally, the devices must employ a network address translator.

Difference Between Public and Private IP Address in Tabular Form

Table: Public IP Address vs. Private IP Address
Parameters of Comparison
Public IP Address
Private IP Address
It gives access to the global network.
It provides access to the local network.
Address range
The remaining IP addresses are all public IP addresses, excluding the Private IP address range.
It has three blocks of address ranges such as to to to
The public IP addresses will be entirely under the provider's control.
The private network administrator must manage the private IP addresses.
A user must purchase an IP address, and the service provider and its services determine the price.
Private IP addresses are cost-free.
It is used to access the internet and other global services.
IT operates exclusively within a private network and is not connected to the internet.

What is a Public IP Address?

Everyone uses the internet for everything. Each user's phone, computer, or tablet is connected to the internet using a distinct IP address, enabling them to communicate with one another. This particular IP address is public and available to everyone worldwide.

Electronic or computing devices can identify and communicate with one another with the help of the IP address. The IP address assigned to each machine is entirely under the discretion of the internet service provider. One is the public IP address that is static and assigned to services and static web pages, and the other is the public IP address that is dynamic and changes when a computer is disconnected.

Any server that is reachable via the internet, including email servers, web servers, and others, has a public IP address. It enables global communication. The service provider handles Network Address Translation to connect to other devices. Anyone can track public IP addresses. The proprietors of government websites monitor visitor IP addresses to enhance website performance and comprehend user behavior. Additionally, hackers abuse public IP addresses to access private information. Online security tools like virtual private networks offered by companies like Avast, McAfee, and others can safeguard public IP addresses.

Can You Track Public IP Addresses?

Yes. Your ISP's public IP addresses can be used to determine your general location, which may be disclosed. It's simpler for advertisers, governments, or hackers to monitor your internet activity when they know where you're connecting from.

Websites can more easily establish if the same person is visiting the site regularly by using IP monitoring to evaluate online behavior trends. Websites can then forecast your preferences using these patterns.

You can use a proxy server, a VPN, or the Tor browser to connect through a security protocol and mask your IP address so that you can browse the internet more discreetly. Private browsers are another option, although they typically don't offer the level of IP address masking needed.

Connecting to a VPN is currently the easiest way to guarantee your IP address is securely masked online. Your connection will immediately be encrypted by Avast SecureLine VPN, protecting your online banking information, keeping your browsing activity private, and keeping your preferences to yourself.

Why Do People Use Public IP Addresses?

Public IP addresses are used by your Internet service provider to forward internet requests. As a result, the router receives the request when you attempt to browse a website from your device. Through a private IP address, this is accomplished. Your router uses a public IP address to ask your ISP for this website. The request is dealt with. The website URL is then returned to your router by the ISP.

Your computer or the device that made the request receives the address from the router. Remote access is a common benefit of public IP addresses. The public IP address of your router is necessary in case you need to access your computer while you are a long way away. For this, you can utilize remote access programs like AnyDesk and TeamViewer. Your public IP address can be found on the router administration page.

What is a Private IP Address?

The second kind of IP address, known as a private IP address, is frequently used in offices with numerous linked PCs. Every computer in an organization is given a private IP address that can only be used for internal communications. On the internet, these IP addresses are inaccessible.

In the Local Area Network, private IP addresses are employed. Each computer in the private number has a consistent IP address. The private IP addresses given to the devices on the private network are within the administrator's authority. The worldwide network is not made aware of these private addresses. The agency known as Internet Assigned Numbers Authority (IANA) is simple to understand and offers a variety of IP addresses. Private enterprises are given private IP addresses from reserved IP address ranges. Three blocks separate the ranges.

The remaining IP addresses are regarded as public IP addresses. The main benefit is that the IP addresses are hidden from the internet and that the administrator has the power to assign free IP addresses.

Private IPs are used by devices connected to the same network to establish direct, internet-free communication with one another. The private IPs help to improve extra security in any given network because they make it exceedingly challenging for any user or external host to establish a connection. For instance, they may work from home or your workplace. Consequently, printing papers from your home via a wireless connection is simple. On the other hand, your neighbors won't be able to (accidentally) transmit their documents to your printer.

Additionally, your router utilizes your local IP address to route internal internet traffic. Simply put, it makes it easier for your router to send the search results to the PC you are using rather than any other device connected to the same network (such as your or your partner's cell phone).

What Is The Use Of Private IP Addresses?

For networks in homes and businesses, private IP addresses are employed. For accessing a network, these addresses provide a different set of addresses. However, it doesn't occupy much room in the public address system. For example, is a widely used private IP address for routers used worldwide. It connects to several devices with addresses like,,, and so forth.

The router is used by devices on a network to translate requests made through public IP addresses. Communication with other public IP addresses and, eventually, with local networks are made possible by this procedure. Therefore, your device, which has a private IP address, sends a request whenever you wish to access a website. First, a router is used to send this request. The webpage is then provided to your device via a public IP address as a response. Finally, on your device, the page is downloaded and sent to your local network.

An Internet service provider gives a router a public IP address. Devices connected to the router are given private IP addresses.

Communication with file servers and printers is a crucial function of a private IP address. To connect, they can utilize their IP addresses. However, these gadgets are guarded and hidden from view.

How Is Your IP Found?

Public and private IP addresses share the same appearance. This is because IPv6 addresses are alphanumeric sequences with colons in between, while IPv4 addresses are numeric strings with full stops between the digits.

Private IP addresses are also given to network routers, which use them to internalize internet traffic. Routers are special in that they have default IP addresses that are given based on the manufacturer of your router.

The majority of routers, including Linksys, have as their default IP address, but not all router brands and models do. For example, while SMC and Belkin utilize, NETGEAR and D-Link use Cisco uses and, among other private IP addresses. These IPs may be recognized as 192 IP addresses.

Main Difference Between Public and Private IP Address in Points

  • While a private IP address is used to access local and private data within the network, a public IP address provides access to services available worldwide.
  • Private IP addresses are secure, but the public IP address has no protection and is vulnerable to attacks.
  • Each computing device has a public IP address given to it by the internet service provider. In contrast, each computing device has a private IP address given to it by the administrator.
  • In contrast to private IP addresses, which have a uniform format across all devices on the same network, public IP addresses do not.
  • Network address translation (NAT) is needed for private IP addresses to communicate with devices outside the network but not for public IP addresses.
  • After being assigned, public IPs need to be configured on internet routers for proper routing. Private IPs, however, are only set up on private routers; they are not configured on internet routers.
  • A fee must be paid for registration to obtain a public IP; however, private IPs are free.
  • In Windows, the network card info dialogue box can be opened to display a computer's private IP address, or the IPConfig command can be entered into the command line. One must open a browser and use an online tool that displays the public IP to view the public IP, or they may search for "my IP" on Google to view the public IP.


To communicate with computer equipment over the internet, IP addresses are necessary. IT facilitates knowledge acquisition and easy access to services. Depending on the services and usability, IP addresses vary. Private IP addresses are used by businesses to protect sensitive data in their computers from hackers. In contrast, public IP addresses are used by organizations that want to offer their services to users around the world. Applications for network security and antivirus can protect both addresses.

In conclusion, private IP addresses are a component of every local network, which can be found in practically every house or workplace. Each device linked to the same router has a unique private IP address.

Private IP addresses serve primarily to facilitate communication between routers and devices connected to the home network, as opposed to public IP addresses, which are searchable on the internet. Every time you use the internet, you also receive a public IP address. This number is readily available online and acts as your individual online identification number, enabling communication between servers on the public internet. In general, both public and private IPs are essential in the modern world.


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"Difference Between Public and Private IP Address." Diffzy.com, 2023. Mon. 27 Mar. 2023. <https://www.diffzy.com/article/difference-between-public-and-private-ip-address-756>.

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