How To Find Your External Ip Address

However, you can also check your IP Address type on by using Command Prompt (Admin) on a Windows 10 computer. How to Check Your IP Address Type is Windows 10. On computers running Windows 10 and Windows 8 operating system, you can use the Command Prompt (Admin) to find information about your IP Address type. Right-click on the Start button and click on Command Prompt option. On the Command Prompt window, type “ ipconfig /all ” and hit the Enter key on the keyboard of your. Often cited as the 'Swiss Army Knife for TCP/IP' you can use netcat to obtain your external ip. This approach also works with netcat-alikes such as socat or even with telnet: $ echo -ne 'GET /raw HTTP/1.1 r r ' nc myexternalip.com 80. This external address represents the address that other computers on the Internet use to send data to the network. To check this address, you can use one of the many IP address notification sites, which, by using a bit of non-intrusive code, can display your network's external IP address.

If you are wondering whether your IP Address is Static or Dynamic, you will find below a simple way to Check If your IP is Static or Dynamic type.

Is My IP Address Static or Dynamic Type?

If you have a regular cable or DSL service, it is most likely that you are browsing the internet using a Dynamic IP Address. However, some providers may also assign Static IP Address.

An easy way to find information about your IP Address is by making a call to your Internet Service Provider and asking them about the type of IP Address provided to you.

Assuming you can find your device’s name—or you know its MAC address — you should be able to look up its internal IP address. This story was originally published on 8/22/11 by Lifehacker. Right at the top of the page, you’ll see your external IPv6 and IPv4 addresses. You’ll probably only care about the latter for now, but you’ll (one day) use the former for all the networking things.

A good tech support person should be able to answer this question and also provide you with good information about different types of IP Addresses.

However, you can also check your IP Address type on by using Command Prompt (Admin) on a Windows 10 computer.

1. How to Check Your IP Address Type is Windows 10

On computers running Windows 10 and Windows 8 operating system, you can use the Command Prompt (Admin) to find information about your IP Address type.

1. Right-click on the Start button and click on Command Prompt option.

2. On the Command Prompt window, type “ipconfig /all” and hit the Enter key on the keyboard of your computer.

3. Once the command is executed, scroll down and locate DHCP Enabled line and read the word next to it.

In case the word next to DHCP Enabled is Yes, you have a Dynamic IP Address and if the word is No you have a Static IP Address.

As you can see in the image above, our testing computer does not have a Dynamic IP Address (it has a Static IP Address).


Although you may not know it, but you have two IP addresses, an Internal IP address (Private ) and an external IP address (Public).

Why do you need two IP addresses and what is the difference between an Internal and external IP address?

What Is an External IP Address?

The external IP address or Public IP address is the IP address of the router interface that is connected to the Internet.

Here is a diagram to illustrate the IP address allocation on a typical home or small business network.

A router will typically have two network interfaces.

  • An Internal Interface
  • An external Interface

Each of these interfaces will have an IP address. The IP address assigned to the external Interface will have a routable IP address and will be assigned by your ISP.

This address is also known as the public address.

Public address ranges are assigned to ISPs by Internet Assigned Numbers Authority (IANA.

On Home office networks that use a NAT router the internal IP addresses use a special IP address range.

NAT allows thousands of computers on an internal network access the Internet using a single external IP address.

This address range is specifically reserved for internal addresses and the IP addresses will not be forwarded by routers on the Internet.

Internal Addresses are also called Private addresses as they are restricted to private networks.

All of the devices on my home network have addresses like 192.168.1.x but externally they have the address

Home networks usually use addresses in the .192.168.0.* or .192.168.1.* address range.

The network address range is a designated non route-ableprivate network address.


However they are not the only non route-able private address ranges that you can use. Others address ranges that can be used are:

  • 10.x.x.x is a 24 bit address block
  • 172.16.x.x to 172.31.x.x is a 20 bit address block.

See wiki private networks for more details

Note: You may want to read the IP4 Addresses and classes tutorial if you are unfamiliar with network addresses.

Finding Your External (Public) and Internal (Private) IP Addresses

To find your external IP address do a search for your IP address in Google then you will probably see a screen like this

Google shows an IP address:

This is your external IP address.

Now open a command line and type:



How To Find Your External Ip Address From Your Wifi Internet

You should see something like this:

This time your IP address is

This is your Internal IP address.

The internal IP address, is used on your local internal network and the external IP address is used when communicating with machines on the Internet.

Allowing Access from The Internet To Your Network

Because of the NAT router there is no direct connection between the Internet, and a computer on the local network.

All communication between your Internal network and the Internet must be initiated by a device on your Internal network.

Generally this isn’t a problem, and is a security advantage.

However online gamers, and those who would like to host a website or other services on their own network will need to allow external devices on the Internet to access them.

How To Find Your External Ip Address On Mac

To accomplish this NAT routers can be configured to use a technique called port forwarding.

Port forwarding allows an internal device to to appear to have an external IP address, and allows incoming connections from the Internet.


How To Find Your External Ip Address

Home and business networks use private or internal addresses from a reserved non route-able address range.

On Home and Small Office networks a NAT router connects the internal network to the Internet using a single route-able external or public IP address assigned by the ISP from it’s allocated address block.

The NAT router allows connections to be established only from the internal network to the external network and not vice-versa unless techniques like port forwarding are employed.

Common Questions and Answers

Q- My External IP Address Keeps Changing. Is this normal? Can I stop it?

A- Most ISPs will allocate dynamic IP addresses to their customers. This Address will become the External IP address assigned to your router, and hence it could change.

This is a screenshot showing how my own external IP address has changed over a month.

Some ISPs will allow you to have a static IP address but usually at a premium ( Business broadband)

Static IP addresses do not change.

If you intend providing access to your network from the Internet, then you really need a static external IP address.

However an alternative for home and small business networks is to use a dynamic DNS service.

A dynamic DNS service doesn’t stop the external address from changing, but instead it tracks these changes automatically and updates the DNS records automatically when the IP address changes.


For those who prefer video then I’ve create a video on YouTube that covers the main points above.

Common Questions and Answers

Q- Can You Use an internal IP address on the Internet?

A-No – The internal IP address ranges discussed above are blocked by Internet routers.

Q- How does a message reach an Internal IP Address from an external one?

A- This is done using a translation table on the NAT router, and is covered in understanding port forwarding.

Q- Does in make any difference if I use the 10. IP address range and not the address range.

A –No none at all. However most home routers are preset to use the 192.168 address range.

Q- Who assigns my external IP (Public) address?

A- It is assigned by your ISP.

Q- How do I know if my External Address has changed?

A- You will need to check it using the technique shown earlier.

Q- Can I change my External IP Address?

A- No

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