What Is a Default Gateway?

by Priya Nakamura Updated Apr 12, 2026

A default gateway is the IP address of your router — it's the door through which all devices on your network access the internet. Common default gateways include 192.168.1.1, 192.168.0.1, and 10.0.0.1.

What Is a Default Gateway?
Figure 1 — What Is a Default Gateway?

How It Works

Every device on your network needs to know where to send traffic destined for the internet. The default gateway (your router) receives this traffic and forwards it to the internet. It's like the front door of your house — all mail goes through it.

How to Find Your Gateway

You can find your default gateway IP on any device. On Windows, run ipconfig. On Mac, check Network Preferences.

Related Guides

Video Tutorial

For more information, see RFC 791 — Internet Protocol.

Pro Tip: Every device on the internet has an IP address, but thanks to NAT, hundreds of devices can share a single public IP.

Key Takeaways

  • Private IPs (192.168.x.x, 10.x.x.x) are used inside your home network
  • DNS translates domain names to IP addresses
  • DHCP automatically assigns IPs so you don't have to
  • Your default gateway is your router's IP address

Frequently Asked Questions

What is a default gateway in simple terms?

It's your router's IP address — the address all your devices use to reach the internet.

How do I find my default gateway?

On Windows, open Command Prompt and type "ipconfig". On Mac, go to System Preferences > Network. See our complete guide.

Priya Nakamura

About Priya Nakamura

Priya Nakamura is a telecommunications engineer and networking educator with a Master degree in Computer Networks and a background in ISP infrastructure design and management. Her experience spans both the technical architecture of broadband networks and the practical challenges home users face when configuring routers, managing wireless coverage, and understanding connectivity standards. At RouterHax, she covers WiFi standards and protocols, networking concepts, IP addressing, and network configuration guides.

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