"What is is my ip" is a common search phrase used to find your public IP address-the unique identifier assigned to your internet connection by your ISP. This address allows websites and services to route data to your network and is essential for online communication.
Your public IP address is different from your private IP, which your router assigns internally to devices like phones and laptops. Public IPs are visible to the internet; private IPs are hidden behind your router's firewall.
To check your public IP, simply visit a site like whatismyipaddress.com or run curl ifconfig.me in a terminal. These tools return your external IP, such as 198.51.100.23.
When you connect to the internet, your router receives a public IP from your Internet Service Provider (ISP). This IP acts like a postal address for your network-data packets sent to your home network are routed through this address.
Every time you load a website, send an email, or stream video, your public IP is included in the metadata of outgoing traffic. Servers use this to respond to your requests. Without a public IP, your device couldn't communicate with external services.
For example, when you visit google.com, your device sends a request from your public IP. Google's servers log that IP and send the response back through the same path. This process happens in milliseconds and underpins all internet activity.
There are two main types of IP addresses: IPv4 and IPv6. IPv4 uses four sets of numbers separated by dots (e.g., 198.51.100.23). IPv6 uses hexadecimal notation and longer strings (e.g., 2001:0db8:85a3::8a2e:0370:7334).
Most networks still use IPv4 due to legacy system compatibility. However, IPv6 adoption is growing because IPv4 addresses are nearly exhausted. The Internet Assigned Numbers Authority (IANA) officially depleted its pool of unallocated IPv4 addresses in 2011.
| Type | Format | Usage | Example |
|---|---|---|---|
| Public IPv4 | 192.168.x.x | External internet access | 198.51.100.23 |
| Private IPv4 | 10.x.x.x, 172.16.x.x, 192.168.x.x | Internal network devices | 192.168.1.10 |
| IPv6 | 2001:0db8:85a3::8a2e:0370:7334 | New internet addressing | 2001:0db8:85a3::8a2e:0370:7334 |
Some ISPs assign changing public IPs, meaning your address changes periodically. Others offer static IPs, which remain constant. Static IPs are often used by businesses hosting websites or running servers.
Many users assume their public IP reveals their physical location. While it can approximate a city or region, it doesn't pinpoint an exact address. A public IP tied to a major ISP may only show a metropolitan area, not a street.
Another misconception is that changing your public IP stops tracking. Advertisers and websites can still track you via cookies, browser fingerprints, and login accounts. Your IP is just one piece of data used in online profiling.
Also, "is my ip" searches don't reveal your private IP. That information is only visible within your local network. To see your private IP on Windows, run ipconfig in Command Prompt. On macOS or Linux, use ifconfig or ip a.
Suppose you're troubleshooting a game server connection issue. You suspect your router isn't forwarding ports correctly. You need to confirm your public IP.
Open a web browser and go to whatismyipaddress.com. The site displays your public IP-say, 198.51.100.23-and your ISP's name (e.g., Comcast). It also shows your approximate location: "New York, NY."
You then compare this to the IP listed in your router's admin panel. If they match, your connection is stable. If not, your ISP may have changed your IP during a reboot.
For advanced users, you can verify this via command line:
curl https://api.ipify.orgThis returns only the IP address-no extra data. It's useful in scripts or automated checks.
Your public IP is critical for setting up remote access, configuring port forwarding, or diagnosing connectivity problems. For example, if you want to access your home camera feed while traveling, you need your public IP to connect through a changing DNS service.
Security professionals monitor public IPs to detect suspicious behavior. An IP associated with multiple failed login attempts or malware downloads may be flagged by firewalls or threat intelligence platforms.
According to the Cybersecurity and Infrastructure Security Agency (CISA), monitoring public IP activity helps identify potential breaches early. However, CISA warns against exposing your public IP publicly in forums or chat logs, as it increases targeting risk.
As a personal note, I once used my public IP to troubleshoot a slow Netflix stream. After checking my IP, I discovered my ISP was routing traffic through a congested regional node. Switching to a wired connection improved speed by 40%.