Every device connected to the internet uses an IP address to send and receive data. This guide explains what an IP address is, how it’s assigned, the role it plays in routing, and how IPv4 and IPv6 fit into modern networks.
The fastest way to get your public IP address is to use an online IP checker. When you open the page, it automatically detects your connection and shows your current IP.
Visit the checker from any device to instantly see your current public IP address, with IPv4 and IPv6 detection where available.
Visit howtogetmyipaddress.com from any device to see your IP.
An IP address, short for Internet Protocol address, is a unique numerical identifier assigned to a device on a network. It allows routers and servers to know where data should be sent, similar to how a street address tells the postal service where to deliver a letter.
Whenever you browse a website, stream a video, or send a message, your device exchanges small chunks of data called packets. Each packet carries a source IP address (where it came from) and a destination IP address (where it is going). This addressing system lets the internet route information accurately between billions of devices.
IP addresses are part of the Internet Protocol itself, which defines how data is structured, labeled, and routed across networks. Without IP addressing, routers would have no way to distinguish one device from another or decide where traffic should go.
The internet is a collection of interconnected networks. To move traffic across them, every device needs an identity that works beyond a single Wi-Fi or office network. IP addresses provide this global, network-level identity.
At a high level, IP addresses solve three problems:
This is why IP addressing sits at the network layer (Layer 3) of the OSI model. It abstracts away the physical wiring or Wi-Fi link and focuses on logical paths between networks, not just individual cables or radio signals.
When you connect to a website, your device, your router, your ISP, and the destination server all rely on IP addresses to coordinate the exchange of data.
A simplified flow looks like this:
All of this happens in milliseconds. The important part is that every device involved can read the IP headers on each packet and decide where to send it next.
Not all IP addresses behave the same way. Some are visible on the public internet, some live only inside your local network, and some are permanent while others can change over time.
There are two main versions of the Internet Protocol in use today. Both serve the same purpose—identifying devices and routing traffic—but they use different address formats.
Many networks today operate in dual-stack mode, where devices can have both an IPv4 address and an IPv6 address at the same time. Your device and the websites you visit silently choose the best version to use for each connection.
You rarely think about your IP address, but nearly everything you do online depends on it—often in ways that affect performance, access, and security.
Understanding the basics of IP addresses makes it easier to interpret what you see in IP checker tools, router settings, VPN apps, and system network diagnostics.
Now that you understand what an IP address is, you can check which public IP your connection is using and whether IPv4, IPv6, or both are active on your network.
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