192.168.100.2 Admin Login

The IP address 192.168.100.2 is a Class C private IPv4 address that sits within the 192.168.100.0/24 subnet — a range closely associated with cable modems, modem-router combos, and ISP-supplied gateway devices from brands such as Motorola, ZyXEL, ARRIS, Hitron, Huawei, and Netgear. In most home and small-office setups, the gateway device (cable modem or modem-router combo) occupies 192.168.100.1 as its default IP, and 192.168.100.2 is the first dynamically assigned address handed out by that gateway's DHCP server — typically going to the first device that connects, such as a secondary router, a PC, or a network appliance.

You will most commonly encounter 192.168.100.2 in one of two scenarios: either your ISP-supplied modem has assigned it to your personal router (creating a double-NAT environment), or you have manually configured a device with this static IP to sit alongside the modem on the same subnet. Either way, understanding how 192.168.100.2 works — and how to access or troubleshoot it — is essential for managing your home network effectively. Other commonly used addresses in this family include 192.168.1.254 and 192.168.100.1.

How to Access 192.168.100.2

To reach the admin panel at 192.168.100.2, open any web browser on a device that is connected to the same network and type http://192.168.100.2 directly into the address bar — do not use a search engine, as that will return search results instead of your router's login page. Press Enter and you should be greeted with a login prompt asking for a username and password.

The most common default credentials for devices on the 192.168.100.x subnet are:

• Username: admin  |  Password: admin
• Username: admin  |  Password: password
• Username: admin  |  Password: motorola (common on Motorola/ARRIS combos)
• Username: (blank)  |  Password: (blank) — used by some ARRIS and Hitron devices

Once logged in, you can manage wireless settings, change your Wi-Fi password and SSID, configure port forwarding, adjust DHCP ranges, update firmware, and review connected devices. Because 192.168.100.2 is a private IP address, it is only reachable from within your local network — it is never exposed directly to the public internet.

Router Brands That Use the 192.168.100.x Subnet

While 192.168.100.2 itself is most often a DHCP-assigned client address rather than a router's default gateway, it belongs to a subnet that is strongly associated with specific hardware brands. Understanding which manufacturers favour this range helps you identify your device and find the right credentials.

• Motorola / ARRIS — Cable modem-router combos such as the Motorola MG7700, MG8702, and ARRIS SURFboard SBG series frequently use 192.168.100.1 as their default gateway, making 192.168.100.2 the first DHCP lease issued to a connected router or PC.
• ZyXEL — Several ZyXEL cable gateway models (including those supplied by ISPs in North America and Europe) default to the 192.168.100.0/24 range, with the gateway at .1 and client devices starting at .2.
• Hitron Technologies — ISP-supplied Hitron gateways (e.g., CGN3, CGNM-2250) used by providers such as Rogers and Comcast operate on the 192.168.100.x subnet, assigning 192.168.100.2 to the first downstream device.
• Huawei — Certain Huawei ONT (Optical Network Terminal) and HG-series gateway devices use 192.168.100.1 as their management IP, placing connected routers or computers at 192.168.100.2.
• Netgear (Cable Modems) — Netgear cable modem models like the CM1000 and CM2000 can assign 192.168.100.2 to a downstream router when the modem's internal DHCP is active.
• TP-Link — In bridge-mode or ISP-combo configurations, TP-Link routers are sometimes manually assigned 192.168.100.2 as a static WAN or LAN IP to communicate with an upstream modem at 192.168.100.1.

If you are unsure whether 192.168.100.2 is the correct address for your device, open a command prompt (Windows: Start > cmd, then type ipconfig /all) or a terminal (macOS/Linux: ip route or netstat -nr) and look for the Default Gateway entry. If it shows 192.168.100.1, then your device has been assigned an address in this subnet — most likely 192.168.100.2 or higher.

If You Can't Access 192.168.100.2

If typing http://192.168.100.2 into your browser returns an error or a blank page, work through the following checks before assuming the address is wrong:

1. Verify your gateway address. Open a command prompt and run ipconfig /all (Windows) or ip route show (Linux/macOS). If the Default Gateway shown is 192.168.100.1, your device's IP should be somewhere in the 192.168.100.x range — confirm the exact address assigned to your machine.
2. Check your physical connection. Make sure your device is connected to the router or modem via Ethernet cable or Wi-Fi. A disconnected or unstable link will prevent you from reaching any local IP, including 192.168.100.2.
3. Disable VPN or proxy software. Active VPN clients or proxy settings can reroute traffic away from your local subnet, making 192.168.100.2 unreachable even when your hardware is functioning correctly.
4. Try a different browser or incognito mode. Browser extensions (especially ad-blockers or security tools) can interfere with local IP access. Open an incognito/private window and try again.
5. Confirm the device at .2 is powered on. If 192.168.100.2 is assigned to a secondary router or network appliance, that device must be powered on and connected for the address to respond.
6. Check for IP conflicts. If two devices on the same network share the address 192.168.100.2, neither will respond reliably. Log into your gateway at 192.168.100.1 and review the DHCP client list to spot duplicates.

If none of the above resolves the issue, consult our guide to find your router IP address for a full walkthrough across all major operating systems.

Understanding Double NAT and 192.168.100.2

One of the most common reasons you will see 192.168.100.2 in a home network is double NAT — a situation where two routing devices are both performing Network Address Translation between your devices and the internet. Here is how it typically happens:

1. Your ISP installs a cable modem-router combo (from Motorola, ARRIS, Hitron, or a similar brand) that uses 192.168.100.1 as its gateway and runs its own DHCP server.
2. You connect your personal router (e.g., a Netgear Nighthawk, TP-Link Archer, or ASUS RT series) to the modem's LAN port.
3. The modem's DHCP server assigns your personal router's WAN interface the address 192.168.100.2.
4. Your personal router then creates its own subnet (commonly 192.168.1.1 or 192.168.0.1) for your home devices.

The result is two layers of NAT, which can cause problems with online gaming, VoIP calls, remote desktop connections, and certain VPN configurations. To resolve double NAT, you have two main options:

• Put the modem in bridge mode — Log into your modem at 192.168.100.1 and enable bridge or passthrough mode. This disables the modem's routing function and lets your personal router handle all NAT duties.
• Use the modem's DMZ feature — Point the modem's DMZ to 192.168.100.2 (your personal router's WAN IP). This effectively passes all inbound traffic to your router, reducing most double-NAT issues without fully disabling the modem's routing.

Changing Your Router's Password via 192.168.100.2

Keeping a strong, unique password on your router is one of the most important steps you can take to protect your home network. Default passwords for devices in the 192.168.100.x subnet — such as admin, password, or motorola — are publicly documented and easily exploited. Follow these steps to update your credentials:

1. Open your browser and navigate to http://192.168.100.2.
2. Log in with your current username and password (use the defaults listed above if you have never changed them).
3. Locate the Administration, Management, or System section of the admin panel — the exact label varies by brand (Motorola, ZyXEL, Hitron, etc.).
4. Find the Change Password or Admin Password field and enter a new password that is at least 12 characters long, mixing uppercase letters, lowercase letters, numbers, and symbols.
5. Confirm the new password when prompted and click Save or Apply.
6. Your router will apply the change — you may be logged out automatically and asked to log back in with the new credentials.

While you are in the admin panel, also consider changing your Wi-Fi password (WPA2/WPA3 key) and your network name (SSID) to something that does not reveal your router brand or ISP, as this information can assist attackers in targeting known vulnerabilities.

Router Username and Password List

Factory Reset Procedures for Devices on the 192.168.100.x Subnet

If you have forgotten the admin password for a device at 192.168.100.2 — or if the device is behaving erratically — a factory reset will restore all settings to their out-of-box defaults, including the IP address, username, and password. The exact procedure varies by brand:

• Motorola / ARRIS SURFboard series: Locate the small Reset pinhole on the rear panel. With the device powered on, insert a straightened paperclip and hold for 10–15 seconds until the power LED flashes or changes colour. Release and wait up to 2 minutes for the reboot to complete. The gateway will return to 192.168.100.1 and default credentials.
• ZyXEL cable gateways: Press and hold the Reset button (usually recessed on the back) for 10 seconds. The device will reboot automatically. Default login is typically admin / 1234 or admin / admin, depending on the model.
• Hitron CGN / CGNM series: Hold the Reset button on the rear for 15 seconds while the unit is powered on. All LEDs will briefly go dark before the device restarts. Default credentials are usually printed on the label on the bottom of the unit.
• Huawei HG / ONT series: Press and hold the Reset button for 10 seconds. The device will reboot and restore factory settings. Default login is commonly admin / admin or telecomadmin / admintelecom for ISP-locked firmware.
• Netgear cable modems (CM series): Use a pin to press the Factory Reset button on the rear for 7 seconds. The Power LED will blink amber during the reset process. Once complete, the modem returns to its default state and will re-assign 192.168.100.2 to the first connected device.

Important: A factory reset erases all custom settings — including your Wi-Fi name, password, port forwarding rules, and any static IP assignments. Make sure to note down your current configuration before proceeding, especially if your ISP requires specific WAN settings.

What Is 192.168.100.2 as a Private IP Address?

192.168.100.2 is a Class C private IPv4 address, defined by RFC 1918 as part of the reserved block 192.168.0.0 – 192.168.255.255. Private addresses in this range are never routed over the public internet — they exist exclusively within local area networks (LANs) such as your home Wi-Fi, a small business network, or a corporate intranet.

Within the 192.168.100.0/24 subnet, the address space works as follows:

• 192.168.100.0 — Network address (not assignable to any device)
• 192.168.100.1 — Typically the default gateway (modem or router)
• 192.168.100.2 — First usable host address; commonly the first DHCP lease or a manually assigned static IP
• 192.168.100.3 – 192.168.100.253 — Remaining usable host addresses for other devices on the network
• 192.168.100.254 — Sometimes used as an alternate gateway address (see 192.168.1.254 for a related example)
• 192.168.100.255 — Broadcast address (not assignable)

Because 192.168.100.2 is a private address, any device on your local network — a laptop, smartphone, smart TV, gaming console, or network printer — could theoretically be assigned this IP by your router's DHCP server. However, only one device at a time should hold this address. Assigning 192.168.100.2 to two devices simultaneously causes an IP address conflict, resulting in intermittent connectivity loss for both devices.

To avoid conflicts, either let your router's DHCP server manage address assignments automatically, or — if you need a device to always have the same IP — use a DHCP reservation (also called a static DHCP lease) in your router's admin panel rather than manually configuring the IP on the device itself.

Related IP Addresses in the 192.168.100.x Subnet

If 192.168.100.2 is not the address you were looking for, or if you need to access a different device on the same subnet, the following addresses are commonly used alongside 192.168.100.2 in the same network environment:

• 192.168.100.1 — The default gateway for most cable modems and modem-router combos from Motorola, ARRIS, ZyXEL, Hitron, and Huawei. This is the address you use to log into the modem's admin panel.
• 192.168.100.3 — The second DHCP-assigned address in the subnet, typically going to the second device that connects to the gateway.
• 192.168.100.10 — A common starting point for DHCP pools on some ISP-configured gateways, leaving .2 through .9 free for static assignments.
• 192.168.100.254 — Occasionally used as an alternate gateway or management IP on some enterprise-grade and ISP-supplied equipment.

For other common private gateway addresses used across different router brands and subnets, you may also want to explore 192.168.0.1, 192.168.1.254, 192.168.8.1, and 10.0.0.1.

Frequently Asked Questions About 192.168.100.2

Is 192.168.100.2 a router's default gateway?

Not typically. In most setups using the 192.168.100.x subnet, the default gateway is 192.168.100.1 — used by cable modem brands like Motorola, ARRIS, ZyXEL, and Hitron. The address 192.168.100.2 is usually the first client IP assigned by that gateway's DHCP server, often going to a secondary router or the first connected computer.

Why does my router have the IP 192.168.100.2?

Your personal router has been assigned 192.168.100.2 on its WAN interface by your ISP's modem or gateway device. This is a classic double-NAT scenario. Your modem (at 192.168.100.1) sees your router as just another client on its network. To resolve this, consider enabling bridge mode on your modem or using the modem's DMZ feature pointed at 192.168.100.2.

What are the default login credentials for 192.168.100.2?

The credentials depend on the device that holds this IP. For Motorola and ARRIS devices on the 192.168.100.x subnet, try admin / motorola or admin / password. For ZyXEL, try admin / 1234. For Hitron, check the label on the bottom of the device. For Huawei, try admin / admin. If none of these work, a factory reset will restore the defaults.

Can I set 192.168.100.2 as a static IP on my computer?

Yes. You can manually assign 192.168.100.2 to your computer or any other device as a static IP, as long as no other device on the network is already using it. Set the subnet mask to 255.255.255.0 and the default gateway to 192.168.100.1. This is useful for accessing your modem's admin panel when its DHCP server is disabled or not responding.

How do I find out if 192.168.100.2 is my correct gateway?

Open a command prompt on Windows and type ipconfig /all, then look for the Default Gateway field. On macOS or Linux, run netstat -nr or ip route show. If the gateway shown is 192.168.100.1, your device's IP is likely 192.168.100.2 or another address in the same subnet. You can also check our guide to find your router IP address.

What should I do if there is an IP conflict at 192.168.100.2?

If two devices are fighting over 192.168.100.2, you will see intermittent connectivity drops on both. Log into your gateway at 192.168.100.1 and check the DHCP client table to identify both devices. Assign one of them a different static IP (e.g., 192.168.100.3) or create a DHCP reservation so each device always receives a unique address.