Understanding IP Addresses: Public vs. Private
Every device connected to a network is assigned a unique identifier known as an IP address. There are two main types: public IP addresses and private (local) IP addresses. A public IP address is assigned by your Internet Service Provider (ISP) and is visible to the outside world, allowing your network to communicate with websites and online services. In contrast, a private IP address is assigned by your router and is used for communication between devices within your local network, such as your home Wi-Fi. Private IPs are not accessible from the internet, making them more secure for internal communication.
IPv4 vs. IPv6: The Two Addressing Standards
IP addresses come in two versions: IPv4 and IPv6. IPv4 uses a 32-bit numeric format (e.g., 192.168.1.1) and has been the standard for decades. However, the explosive growth of internet-connected devices has nearly exhausted the available IPv4 addresses. To address this, IPv6 was introduced, using a 128-bit alphanumeric format (e.g., 9544:18a7:d5ea:e5b9:6ba3:5437:757a:87db), vastly increasing the number of possible unique addresses and supporting the future of the Internet of Things (IoT).
How to Find Your IP Address on Windows
Using Windows Settings
- Windows 11:
- Open the Start menu and select Settings.
- Click Network & Internet.
- Select your active connection (Wi-Fi or Ethernet).
- Your IP address appears under IPv4 address.
- Windows 10:
- Open Settings from the Start menu.
- Go to Network & Internet > Status > View your network properties.
- Find your IP address next to IPv4 address.
Using Command Prompt
- Press Windows key + R, type
cmd
, and press Enter. - In the Command Prompt, type
ipconfig
and press Enter. - Look for IPv4 Address under your active network adapter.
This method works across all modern Windows versions and is especially useful for advanced users or troubleshooting network issues.
How to Find Your IP Address on Mac
Using System Settings
- Click the Apple menu and select System Settings.
- Choose Network.
- Select your active connection (Wi-Fi or Ethernet) and click Details.
- Your IP address will be displayed in the list.
Using Terminal
- Open the Terminal app (found in Applications > Utilities).
- For Wi-Fi, type
ipconfig getifaddr en0
and press Enter. - For Ethernet, type
ipconfig getifaddr en1
and press Enter. - Your local IP address will be shown.
How to Find Your IP Address on Android
- Open Settings.
- Tap Network & Internet (or Connections on some devices).
- Tap Wi-Fi and select your connected network.
- Scroll to view your IP address under Network Details or Status.
On some Android devices, you may need to tap the gear icon next to your Wi-Fi network and then tap View more to see your IP address.
How to Find Your IP Address on iPhone and iPad
- Open Settings.
- Tap Wi-Fi.
- Tap the information icon (i) next to your connected network.
- Your IP address will be listed under the IPv4 Address section.
How to Find Your Public IP Address
Your public IP address is what websites and online services see when you connect to them. There are several easy ways to find it:
- Web Browser:
- Open any browser and search for “What is my IP address.” Your public IP will be displayed at the top of the search results.
- Online Tools:
- Use reputable IP lookup tools such as WhatIsMyIPAddress.com or NordVPN’s IP checker.
- Command Prompt/Terminal:
- On Windows, type
nslookup myip.opendns.com resolver1.opendns.com
in Command Prompt. - On Mac or Linux, type
curl ifconfig.me
in Terminal.
Security Risks of IP Address Exposure
While your IP address is essential for internet connectivity, it can also expose you to certain risks:
- Location Tracking:
- Your IP address can reveal your approximate geographic location, which websites and advertisers may use to target content or ads.
- Targeted Attacks:
- Hackers can use your IP address to attempt attacks on your network, such as DDoS attacks or unauthorized access attempts.
- Data Collection:
- Advertisers and trackers can use your IP address to build a profile of your online activities, potentially compromising your privacy.
Best Practices for Protecting Your IP Address
- Use a VPN:
- A Virtual Private Network (VPN) encrypts your internet traffic and masks your real IP address, making it difficult for others to track your online activities.
- Enable Firewalls:
- Firewalls help block unauthorized access to your network and devices.
- Keep Software Updated:
- Regularly update your operating system, browsers, and security software to patch vulnerabilities.
- Be Cautious Online:
- Avoid sharing your IP address publicly and be mindful of the websites and services you use.
How to Find the IP Address of All Devices on Your Network
To view all devices connected to your network:
- Router Admin Page:
- Log into your router’s web interface (usually by entering the router’s IP address in a browser). Look for a section like “Connected Devices” or “DHCP Clients List” to see all assigned IP addresses.
- Command Line Tools:
- On Windows, use
arp -a
in Command Prompt to display all active IP addresses on your local network.
FAQs
How can I locate my IP address?
You can find your IP address in your device’s network settings or by using an online IP lookup tool for your public IP.
How do I find my IP address on iPhone?
Go to Settings > Wi-Fi, tap the (i) next to your connected network, and your IP address will be listed under IPv4 Address.
How do I find the IP address of all devices on my network?
Log into your router’s admin page or use the arp -a
command in Command Prompt to view all connected devices and their IP addresses.