Locating the IP address of a router is an essential step in managing a network, troubleshooting connectivity issues, configuring port forwarding, or accessing the web-based administrative interface. The router IP—typically the default gateway for local devices—is the address through which all outbound traffic to external networks is routed. This technical guide outlines accurate methods for identifying a router’s IP address across various operating systems and network environments, including Windows, macOS, Linux, mobile platforms, and command-line interfaces.

Most routers use a private IPv4 address within the ranges defined by RFC 1918:

• 10.0.0.0 – 10.255.255.255 (/8)
• 172.16.0.0 – 172.31.255.255 (/12)
• 192.168.0.0 – 192.168.255.255 (/16)

Common default router IPs include:

• 192.168.2.1
• 192.168.0.1
• 192.168.1.254
• 10.0.0.1

These are used by different manufacturers and ISPs depending on their configuration standards.

Methodology: Determining the Router IP Address

A. On Windows (CMD Method)

1. Open Command Prompt:
   Win + R → type cmd → press Enter
2. Run the command: ipconfig
3. Locate the line: Default Gateway . . . . . . . . . : 192.168.1.1

The IP listed as Default Gateway under your active network interface is your router’s IP address.

B. On macOS

1. Open Terminal:
   Applications → Utilities → Terminal
2. Run the command: netstat -nr | grep default Or (modern versions): route get default
3. Look for: gateway: 192.168.0.1

Alternatively, navigate to System Preferences → Network → select the active connection → click Advanced → go to the TCP/IP tab to see the router IP.

C. On Linux

1. Open Terminal
2. Run the command: ip route | grep default Output will include: default via 192.168.1.1 dev eth0

This confirms that 192.168.1.1 is the router IP for the system’s active network interface.

D. On Android

1. Go to Settings → Wi-Fi
2. Tap the connected network
3. Scroll to Advanced or IP settings

The gateway entry represents the router IP.

Alternatively, use a terminal emulator with root access and run:

ip route

E. On iOS (iPhone/iPad)

1. Go to Settings → Wi-Fi
2. Tap the active network
3. Under Router, the IP address will be shown (e.g., 192.168.0.1)

Alternative Techniques

A. Using the Web Interface

If the IP is unknown but within expected private ranges, manually try opening:

• http://192.168.1.1
• http://192.168.0.1
• http://10.0.0.1
• http://192.168.1.254

Only one will succeed, assuming you are on the same subnet.

B. Using arp Table Inspection

On a terminal (Windows, Linux, macOS), run:

arp -a

This will list IP-to-MAC address mappings of recently accessed devices on your network. The router usually appears at the lowest-numbered IP (e.g., 192.168.1.1), and its MAC address typically begins with the manufacturer’s prefix (e.g., Cisco, TP-Link, Netgear).

C. Using Network Scanning Tools

Utilities like Advanced IP Scanner, Angry IP Scanner, or nmap can identify the router:

nmap -sn 192.168.1.0/24

Then inspect the devices responding with port 80/443 open and common vendor MAC prefixes.

Common Router IP Addresses

Common Router IP Address by Vendor