An Internet Protocol (IP) address is the unique identifying number assigned to every device connected to the internet. An IP address definition is a numeric label assigned to devices that use the internet to communicate. Computers that communicate over the internet or via local networks share information to a specific location using IP addresses.

IP addresses have two distinct versions or standards. The Internet Protocol version 4 (IPv4) address is the older of the two, which has space for up to 4 billion IP addresses and is assigned to all computers. The more recent Internet Protocol version 6 (IPv6) has space for trillions of IP addresses, which accounts for the new breed of devices in addition to computers. There are also several types of IP addresses, including public, private, static, and dynamic IP addresses.

Every device with an internet connection has an IP address, whether it’s a computer, laptop, IoT device, or even toys. The IP addresses allow for the efficient transfer of data between two connected devices, allowing machines on different networks to talk to each other.

IP Address Classes:

IPv4 addresses are divided into five classes:

1. Class A: Large networks with many hosts (e.g., 10.0.0.0).
2. Class B: Medium-sized networks (e.g., 172.16.0.0).
3. Class C: Small networks (e.g., 192.168.0.0).
4. Class D: Multicast addresses.
5. Class E: Reserved for future use.

IP Address Types:

1. Public IP address: A unique address assigned to a device by an ISP, visible to the public internet.
2. Private IP address: A non-unique address used within a private network, not visible to the public internet.
3. Static IP address: A permanently assigned IP address.
4. Dynamic IP address: An IP address assigned temporarily by a DHCP server.

IP addresses play a crucial role in facilitating communication between devices on the internet.

Here are the steps to find your router’s IP address:

Using a Computer

1. Windows:
   • Press the Windows key + R to open the Run dialog box.
   • Type “cmd” and press Enter.
   • In the Command Prompt, type “ipconfig” and press Enter.
   • Look for the “Default Gateway” IP address.
2. Mac:
   • Click the Apple menu and select “System Preferences.”
   • Click “Network.”
   • Select the network connection you’re using (e.g., Wi-Fi or Ethernet).
   • Click “Advanced.”
   • Click “TCP/IP.”
   • Look for the “Router” IP address.

Using a Mobile Device

1. Android:
   • Go to Settings.
   • Select “Wi-Fi” or “Connections.”
   • Long-press on the network you’re connected to.
   • Select “Modify network.”
   • Check the box next to “Show advanced options.”
   • Look for the “Gateway” IP address.
2. iOS:
   • Go to Settings.
   • Select “Wi-Fi.”
   • Tap the “i” icon next to the network you’re connected to.
   • Look for the “Router” IP address.

Using the Router’s Web Interface

1. Open a web browser.
2. Type the router’s IP address in the address bar (e.g., 192.168.0.1 or 192.168.1.1).
3. Log in to the router using the admin username and password.

Common Router IP Addresses

• 192.168.0.1
• 192.168.1.1
• 10.0.0.1

Note: The steps may vary depending on your router model and firmware version.