192.168.100.25 Admin Login

192.168.100.25 is a private Class C IPv4 address belonging to the 192.168.100.0/24 subnet — a range strongly associated with ISP-provisioned cable modems, modem-router combos, and gateway devices from manufacturers such as ARRIS, Motorola, Huawei, ZyXEL, Ambit Microsystems, and Ubee. Unlike typical home routers that default to subnets like 192.168.1.1 or 192.168.0.1, ISP-provisioned equipment frequently uses the 192.168.100.x range to avoid conflicts with downstream routers on your home network. Within this subnet, the standard default gateway address is 192.168.100.1, while 192.168.100.25 is most commonly assigned to a connected client device — such as a laptop, smartphone, smart TV, gaming console, or networked printer — via DHCP. It can also be manually configured as a static IP for a specific device on the same network.

How to Access the Admin Panel on a 192.168.100.25 Network

If your device has been assigned the IP address 192.168.100.25, it means you are connected to a network operating in the 192.168.100.x subnet. To access your router or modem's admin panel, you should not type 192.168.100.25 into your browser — instead, you need to navigate to your default gateway address, which is almost certainly 192.168.100.1 on this type of network.

To open the admin interface, follow these steps:

1. Open any web browser (Chrome, Firefox, Edge, or Safari).
2. Type http://192.168.100.1 into the address bar and press Enter.
3. You will be prompted to enter a username and password. For most ARRIS, Motorola, Huawei, and ZyXEL devices, the default credentials are admin / admin or admin / password. Check the label on the bottom or back of your device for the exact defaults.
4. Once logged in, you can manage your Wi-Fi settings, change your password, configure port forwarding, update firmware, and more.

If you are unsure whether 192.168.100.1 is your gateway, open a Command Prompt on Windows (Start > type cmd > press Enter) and run ipconfig. Look for the Default Gateway field — if it shows 192.168.100.1, you are on the correct subnet and your device has been assigned 192.168.100.25 by the DHCP server.

What Does It Mean to Have the IP 192.168.100.25?

When your device is assigned 192.168.100.25, it means the DHCP server on your gateway — typically an ISP-supplied cable modem or modem-router combo from brands like ARRIS, Motorola, Huawei, ZyXEL, Ambit Microsystems, or Ubee — has automatically allocated this address to your device. This is completely normal behavior and indicates your device is successfully connected to the local network.

Here is how the address assignment typically works in the 192.168.100.x subnet:

• 192.168.100.1 — The default gateway (your modem/router's admin IP).
• 192.168.100.2 through 192.168.100.24 — DHCP-assigned addresses for other devices that connected before yours.
• 192.168.100.25 — Your device's currently assigned private IP address.
• 192.168.100.26 and beyond — Available for additional devices connecting to the network.

Your device uses 192.168.100.25 to communicate with the router, which in turn forwards your requests to the public internet. This address is not visible to the outside world — websites and external servers only see your router's public IP address, assigned by your ISP.

Router Brands Associated with the 192.168.100.x Subnet

The 192.168.100.x address range is specifically favored by ISP-provisioned hardware. If your device has been assigned 192.168.100.25, your gateway is most likely one of the following brands:

• ARRIS — One of the most widely deployed cable modem brands in North America. ARRIS modems and modem-router combos (such as the SURFboard series) frequently use 192.168.100.1 as their default gateway, placing client devices like yours in the 192.168.100.x range.
• Motorola — Motorola cable modems and gateways (including the MB series) are another common source of 192.168.100.x addressing, especially when provisioned by cable ISPs like Comcast/Xfinity or Spectrum.
• Huawei — Huawei's fiber ONT and modem-router combo units, widely deployed by ISPs globally, often assign addresses in the 192.168.100.x subnet to connected devices.
• ZyXEL — ZyXEL DSL and cable gateway devices provisioned by ISPs regularly use the 192.168.100.0/24 subnet for their local network DHCP pool.
• Ambit Microsystems — Ambit cable modems, often rebranded and distributed by ISPs, are known to use 192.168.100.1 as their default gateway.
• Ubee — Ubee interactive modem-router combos, frequently deployed by cable providers, also operate in the 192.168.100.x subnet.

If you are renting your modem or gateway directly from your ISP (such as Comcast, Spectrum, Cox, or a regional cable provider), there is a strong chance your equipment falls into one of the above categories and is responsible for assigning your device the 192.168.100.25 address.

If You Can't Access the Admin Panel

If navigating to http://192.168.100.1 does not bring up a login page, there are several possible reasons and solutions:

• Wrong gateway address: Your gateway may not be 192.168.100.1. Run ipconfig (Windows) or ifconfig / ip route (Mac/Linux) to confirm your actual default gateway. If it differs, use that address instead.
• Not connected to the correct network: Make sure your device is connected to the router's Wi-Fi or via an Ethernet cable — not a mobile data connection.
• Browser cache or HTTPS issue: Try clearing your browser cache or explicitly typing http:// (not https://) before the IP address.
• Firewall or VPN interference: Disable any active VPN or firewall temporarily and try again.
• Admin IP has been changed: A previous administrator may have changed the default gateway IP. In this case, you may need to perform a factory reset to restore the default settings.

You can also check our guide to find your router IP address for more detailed instructions across different operating systems.

How to Perform a Factory Reset on Devices in the 192.168.100.x Subnet

If you have lost access to your admin panel or forgotten your login credentials, a factory reset will restore your device to its default settings — including the default gateway IP of 192.168.100.1 and the original username and password. Here is how to reset the most common brands associated with this subnet:

• ARRIS: Locate the small Reset pinhole button on the back or bottom of the device. Use a straightened paperclip or pin to press and hold it for 10–15 seconds until the lights flash and the device reboots. The gateway will return to 192.168.100.1 with default credentials (usually admin / password).
• Motorola: Find the Reset button (usually recessed) on the rear panel. Hold it for 10 seconds with a pin until the device restarts. Default login is typically admin / motorola or admin / admin.
• Huawei: Press and hold the Reset button on the back of the unit for 10–15 seconds. The device will reboot and restore factory defaults. Default credentials are often printed on the device label.
• ZyXEL: Hold the Reset button for 10 seconds. After rebooting, the gateway returns to 192.168.100.1 with default credentials (commonly admin / 1234 or as printed on the label).
• Ubee: Press and hold the Reset button for 10–15 seconds. Default credentials are typically user / user for standard access or admin / admin for full admin access.

Important: A factory reset will erase all custom settings, including your Wi-Fi name (SSID), Wi-Fi password, port forwarding rules, and any other configurations. Make sure to note down your settings before performing a reset.

Changing Your Network Password and Securing Your Network

Once you have accessed your admin panel via 192.168.100.1, it is strongly recommended that you change the default admin password and your Wi-Fi password to protect your network. Leaving default credentials in place makes your network vulnerable to unauthorized access.

To change your Wi-Fi password on devices in the 192.168.100.x subnet:

1. Log in to the admin panel at http://192.168.100.1.
2. Navigate to the Wireless or Wi-Fi Settings section.
3. Locate the Wi-Fi Password or WPA Key field and enter your new, strong password.
4. Save your changes. Your connected devices will need to reconnect using the new password.

To change the admin panel password, look for a Management, Administration, or Security tab within the admin interface. Enter your current password, then set a new one. Use a combination of uppercase and lowercase letters, numbers, and symbols for maximum security. After changing the admin password, your device at 192.168.100.25 and all other devices on the network will benefit from a more secure gateway.

Router Username and Password List

Related IP Addresses in the 192.168.100.x Subnet

Since your device has been assigned 192.168.100.25, you are operating within the 192.168.100.0/24 subnet. Here are the most relevant IP addresses in this range that you should be aware of:

• 192.168.100.1 — The default gateway for this subnet. This is the admin panel address for ARRIS, Motorola, Huawei, ZyXEL, Ambit, and Ubee devices. Type this into your browser to manage your network settings.
• 192.168.100.2 through 192.168.100.24 — DHCP-assigned addresses for other devices on your network that connected before your device received 192.168.100.25.
• 192.168.100.26 through 192.168.100.254 — Available addresses in the DHCP pool for additional devices joining your network.
• 192.168.100.255 — The broadcast address for this subnet. It is not assigned to any device.

Other commonly used default gateway addresses outside this subnet include 192.168.1.254, 192.168.8.1, 192.168.10.1, and 10.0.0.1. If you ever switch to a different router or ISP, your device may be assigned an address in one of those subnets instead.

Frequently Asked Questions About 192.168.100.25

Is 192.168.100.25 a router's default gateway?

No, 192.168.100.25 is not a router's default gateway address. The standard default gateway in the 192.168.100.x subnet is 192.168.100.1, used by brands like ARRIS, Motorola, Huawei, ZyXEL, Ambit Microsystems, and Ubee. The address 192.168.100.25 is a DHCP-assigned client IP, meaning it has been allocated to one of your connected devices — such as a laptop, phone, or smart TV — by the gateway's DHCP server.

Why has my device been assigned 192.168.100.25?

Your device received 192.168.100.25 because the DHCP server on your gateway (most likely an ISP-provisioned cable modem or modem-router combo from ARRIS, Motorola, Huawei, or ZyXEL) automatically assigned it. DHCP assigns addresses sequentially from its pool, so 192.168.100.25 simply means 24 other addresses in the pool were already in use when your device connected.

Can I set 192.168.100.25 as a static IP?

Yes, you can manually configure your device to always use 192.168.100.25 as a static IP address. To do this, go to your device's network settings and set the IP address to 192.168.100.25, the subnet mask to 255.255.255.0, and the default gateway to 192.168.100.1. You should also set a DNS server, such as 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare). Make sure to reserve this address in your router's DHCP settings to prevent conflicts with other devices.

Can two devices share the IP 192.168.100.25?

No. Two devices cannot share the same IP address on the same network. If two devices are both assigned or configured with 192.168.100.25, an IP address conflict will occur, causing connectivity issues for both devices. Your DHCP server (on your ARRIS, Motorola, Huawei, or ZyXEL gateway) is designed to prevent this by tracking which addresses are in use, but conflicts can occur if you manually assign static IPs without checking availability first.

Is 192.168.100.25 visible on the internet?

No. 192.168.100.25 is a private IP address defined under RFC 1918 and is not routable on the public internet. It is only visible within your local network. External websites and servers only see your router's public IP address, which is assigned by your ISP. Your gateway (ARRIS, Motorola, Huawei, ZyXEL, etc.) uses Network Address Translation (NAT) to map your private address to the public one.

What is the difference between 192.168.100.25 and 192.168.100.1?

192.168.100.1 is the default gateway — the admin interface of your modem or router (from brands like ARRIS, Motorola, Huawei, or ZyXEL). You access it via a browser to manage your network. 192.168.100.25 is a client device address — it is the private IP assigned to one of the devices connected to that gateway, such as your computer or smartphone. Both addresses exist in the same 192.168.100.0/24 subnet and work together to keep your network running.