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How to find your IP address

Network and internet do not identify computers (of any size, even your smartphone) with the name you give them. Computers prefer numbers and numbers they use as identifiers are called IP addresses.

"IP" stands for "internet protocol", which is included in the transmission control / internet protocol (TPC / IP). It's all called IP for cards, and TCP / IP is the language used for communication over most networks.

When it comes to your computer (s), there are actually several IP addresses involved. One is how the computer talks to the Internet over its head, which is your router's IP address. That IP address is generally assigned to the router by your ISP (ISP); the router, in turn, manages all traffic from the computer to the internet. So even if a site only sees a request coming in from the IP address of the router, the router knows how to route the information to / from the computer. (That's why it's called a router.)

The best wireless routers

Computers in the internal networks, it's Wi-Fi or Ethernet, at home or in the office, have their own IP addresses assigned to them (usually by the router ). In this way, all nodes on the internal network can also communicate. The protocol used by the router to assign IP addresses is called Dynamic Host Control Protocol (DHCP).

If you have an assigned IP address, it is typically considered a "dynamic IP" because it may be temporary; The router can give the current node another IP address at a later time (same with the IP address that your ISP gives your router). But you can set "static IP addresses" on computers so they never change. It can be important for certain types of network communication, especially if it is important to be able to find the same node over and over again. You can also get a static IP for your router, which is handy for example when running a web server, but expect your ISP to load extra. IP addresses are usually in the same format as a 32-bit number, shown as four decimal places each with a range from 0 to 255, separated by dots. Each set of three numbers is called an octet. This format is used by IP version 4 (or IPv4). With that you could-in theory-have to out there. But this limited the world to possible 4 + billion IP addresses, which is not enough.

So now there is IPv6, which is 128-bit and went from four to 16 octets. That's a lot more than 4 billion – it's a 34 with 37 zeros after that (or 2 to 128 th power). Technically 340,282,366,920,938,463,463,374,607,431,768,211,455 . There are many IP addresses.

It's good to know, but how do you find your IP address?

Finding Your Internet / General IP Address

There may be a time when you need to know your router's IP address assigned by your ISP. This can be especially useful for things like VoIP calls or remote control.

What you also find is that there is a lot of information about you that is linked to that IP address, especially your ISP name and your public place (called a GeoIP). This is because the ISPs release a number of IP addresses. Calculating your provider and general location based on IP address is as easy as hearing a public list.

The easiest way to check your router's public IP address is to search for "what is my IP?" on Google.

 IP search - Google

With Google, it's all you see. There are plenty of places out there that show you exactly the same thing. They simply see that by visiting the site, your router has made a request and thus revealed the IP address. Websites like WhatIsMyIP.com and IPLocation all go further and show names of your internet service provider, your city and even maps.

GeoIP information is far from foolproof. Generally, you will get an approximation of location-where the provider is, not the actual computer. When visiting these places I learned that I was in Ithaca, New York … and Syracuse, New York. One gave a latitude / longitude that put me in North Carolina (which may be where my ISP has a data center, for everything I know). Be sure to log out of your VPN service as well. Obtaining a proper public IP address usually requires an applicant to be received by the ISP.

Find your internal IP address

Every device that connects to your internal network, it's home or office, has an IP address (your computer, your smartphone, your smart TV, your network printer etc.) It doesn't matter if it uses Wi-Fi or Ethernet. They all have an IP address if they talk to the internet or each other via your router.

In the most basic network, your router will have an IP address like, and it will be called the "gateway". You see it pops up when you look for the IP addresses of other devices. It usually means that the router uses DHCP to assign addresses to devices, where only the last octet is changed. So or, for example. It depends on the range defined by your router.

This is about the same on all internal networks, because they are hidden behind the router, which brings all that communication in and out to the right place. If you have a large internal network, another number called a subnet can help you share your network in groups. The subnet mask used by most home networks is

So how do you find it? Windows requires the command prompt. Search for " cmd " (without quotes) using Windows search. In the resulting pop-up box, type " ipconfig " (no quotes).

  Command line - IPconfig lookup

What is revealed is more than just the IP address: you will see the IPv4 address, subnet mask, plus the default gateway (it is your router). Look above the line of data in the middle and it shows the type of connection: "Ethernet adapter Ethernet." If I used Wi-Fi it would have information under "Wireless LAN Adapter Wi-Fi."

  IP address for iPhone On Mac, it is a little less esoteric. Go to System Settings select Network and it should be there. Click the connection type on the left to see the IP addresses for each type. You may need to click the TCP / IP tab at the top. Or you can go into full geek and open the terminal and type " ipconfig " just like in Windows.

On an iPhone, go to Settings> Wi-Fi and click " I " in a circle () next to the network you are on. The IP address, subnet and router (gateway) will all be there under the DHCP tab.

If you need other devices' IP address in your network, go into the router. How to access your router depends on the brand and software running. In general, you should be able to enter the router's gateway IP address into a browser on the same network to access it. From there, you have to navigate to something like "attached devices" (that's what I get on my Netgear Nighthawk, the picture below). From there, you get a complete list of all devices currently (or recently) connected to the network, and that list contains the IP address assigned to each device.

  IP address in router [19659025] If you're lucky, you have a modern router (or set of routers, like a network system) that can simply be controlled with mobile apps. The app can make it much easier to find the IP address (s) you want. Even my now old (via internet standards-it is from 2013!) Nighthawk has an app now that can pull up a full list of connected devices. Click the icon next to each device to display the IP address and more information for each.

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