192.168.100.8 Admin Login

192.168.100.8 is a Class C private IPv4 address belonging to the 192.168.100.0/24 subnet — a range widely associated with cable modems, modem-router combos, and ISP-provisioned gateway devices from manufacturers such as Motorola, Arris, Huawei, ZyXEL, and TP-Link. While the primary default gateway in this subnet is typically 192.168.100.1, the address 192.168.100.8 is frequently assigned to network devices — such as computers, smart TVs, printers, or IP cameras — via DHCP, or manually configured as a static IP for a specific device or secondary router on the same local network.

Because 192.168.100.8 sits within the same /24 block used by many ISP-supplied modem-router combos, you may encounter this address in home and small-office environments where the gateway device operates on the 192.168.100.x range. Other well-known private gateway addresses include 192.168.1.254, 192.168.0.1, and 10.0.0.1.

How to Access 192.168.100.8

To access the admin panel at 192.168.100.8, open any web browser on a device connected to the same local network and type http://192.168.100.8 directly into the address bar — do not use the search bar. Press Enter and the router or device login page should load immediately. You will typically be prompted for a username and password. On most devices using the 192.168.100.x subnet, the default credentials are admin / admin or admin / password, though Huawei devices may use admin / admin or a unique password printed on the device label.

Once logged in, you can manage a wide range of settings including your Wi-Fi name (SSID), wireless password, DHCP range, port forwarding rules, DNS configuration, MAC address filtering, parental controls, and firmware updates. Keep in mind that 192.168.100.8 is a private IP address, meaning it is only reachable from within your local network — you cannot access it from the internet.

If You Can't Access 192.168.100.8

If entering http://192.168.100.8 in your browser returns an error or a blank page, there are several things you should check. First, confirm that your device is connected to the correct network — either via an Ethernet cable plugged into one of the router's LAN ports, or via Wi-Fi to the correct SSID. Next, open a command prompt (Windows: Start > cmd, then type ipconfig) or terminal (Mac/Linux: type netstat -nr | grep default) and verify that your Default Gateway actually starts with 192.168.100. If it shows a different address such as 192.168.0.1 or 192.168.8.1, then 192.168.100.8 is not your gateway and you should navigate to the correct address instead.

If your gateway is confirmed as 192.168.100.x but you still cannot reach 192.168.100.8, it is possible that no device on your network has been assigned or configured with that specific address. Check whether your router's DHCP pool includes .8 in its range, or whether a static assignment exists for that IP. You can also try accessing the main gateway at 192.168.100.1 instead. Additionally, make sure your browser is not using a proxy server, and try disabling any VPN software that may be redirecting your traffic.

Changing Your Router's Password at 192.168.100.8

Keeping your router secured with a strong, unique password is one of the most important steps you can take to protect your home network. If your network operates on the 192.168.100.x subnet — common with Arris, Motorola, Huawei, and ZyXEL modem-router combos — you should change the default admin password as soon as possible after setup.

To change your password, log in to the admin panel at http://192.168.100.8 (or your gateway address within the same subnet). Once inside, navigate to the Administration, System, or Management section — the exact label varies by brand. Look for a Change Password or Admin Password option. You will be asked to enter your current password and then type your new password twice to confirm. Choose a password that is at least 12 characters long and includes a mix of uppercase letters, lowercase letters, numbers, and symbols. Avoid using easily guessable information such as your address or birthday.

On Huawei devices, the password change option is typically found under Advanced > System Tools > Account Management. On Arris and Motorola cable modems, it is usually under the Basic > Login or Utilities tab. After saving, you will be logged out and must re-enter your new credentials to continue.

Router Username and Password List

Router Brands Associated with the 192.168.100.x Subnet

While 192.168.100.8 itself is most commonly a DHCP-assigned or statically configured device address, it belongs to the 192.168.100.0/24 subnet that is actively used by several well-known networking brands as their default gateway range. Here is a breakdown of the key manufacturers you are likely to encounter on this subnet:

• Motorola — Many Motorola cable modem and modem-router combo units, particularly those deployed by North American ISPs, default to the 192.168.100.x range. The gateway is typically set to 192.168.100.1, and connected devices receive addresses such as 192.168.100.2 through 192.168.100.254 via DHCP.
• Arris — Arris (which acquired Motorola's home networking division) continues to use the 192.168.100.x subnet on many of its SURFboard and modem-router combo products. If you have an Arris device provided by your cable ISP, there is a strong chance your network operates on this subnet.
• Huawei — Huawei routers and ONT (Optical Network Terminal) devices, especially those deployed by ISPs in Europe, Asia, and Africa, frequently use 192.168.100.1 as the default gateway, placing all connected devices — including those at 192.168.100.8 — within this subnet.
• ZyXEL — ZyXEL DSL modems and modem-router combos, often supplied by ISPs, are known to use the 192.168.100.x range. The 192.168.100.8 address may appear as a DHCP-assigned IP for a connected device on a ZyXEL-managed network.
• TP-Link — While TP-Link routers more commonly default to 192.168.0.1 or 192.168.1.1, certain TP-Link modem-router combo models and ISP-customized firmware versions operate on the 192.168.100.x subnet.

Factory Reset Procedures for Devices on the 192.168.100.x Subnet

If you have forgotten your admin credentials or need to restore your device to its factory defaults, the reset process is straightforward but will erase all custom settings — including your Wi-Fi name, password, port forwarding rules, and any other configurations you have made. Before proceeding, note down any important settings if possible.

General Reset Method (All Brands): Locate the small recessed Reset button on the back or bottom of your device. With the device powered on, use a straightened paperclip or a toothpick to press and hold the Reset button for 10 to 15 seconds. Release the button when the indicator lights flash or change pattern. The device will reboot automatically and return to its factory default settings, including restoring the default gateway address (typically 192.168.100.1 on this subnet) and the default admin credentials printed on the device label.

Arris / Motorola SURFboard: Hold the Reset button on the rear panel for 10 seconds until the Power LED blinks. The modem will restart and all settings will be cleared. The default login is usually found on the label on the bottom of the unit.

Huawei Routers/ONTs: Press and hold the Reset button for approximately 10 seconds. On some Huawei models, you may need to hold it for up to 20 seconds. The default username is typically admin and the default password is admin or a unique code on the device label. After reset, access the admin panel via 192.168.100.1.

ZyXEL Modems: Hold the Reset button for 10 seconds. ZyXEL devices typically restore to a default gateway of 192.168.100.1 with credentials admin / 1234 or as printed on the device sticker.

TP-Link (ISP Variant): Hold the Reset button for 10 seconds. After reboot, the device will return to its ISP-configured defaults, which may include a 192.168.100.x gateway address depending on your provider's firmware.

What Is a Private IP Address Like 192.168.100.8?

192.168.100.8 is a private IPv4 address defined under RFC 1918, which reserves three blocks of IP address space for use within private networks: 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. The address 192.168.100.8 falls within the last of these ranges, making it a Class C private IP with a default subnet mask of 255.255.255.0.

Private IP addresses like 192.168.100.8 are not routable on the public internet. This means that no data packet addressed to 192.168.100.8 will ever travel beyond your local network — your router uses Network Address Translation (NAT) to convert private addresses into your single public IP address when communicating with the outside world. This design provides a natural layer of security and also helps conserve the limited pool of available public IPv4 addresses.

Within your local network, every connected device receives its own private IP address. If your router's gateway is 192.168.100.1 and it assigns addresses via DHCP starting from 192.168.100.2, a device receiving the eighth address in the pool would be assigned 192.168.100.8. This could be your laptop, smartphone, smart TV, gaming console, printer, or any other network-capable device. You can also manually assign 192.168.100.8 as a static IP to a specific device — such as a network printer or IP camera — to ensure it always receives the same address regardless of DHCP lease renewals.

It is important to ensure that only one device on your network uses 192.168.100.8 at any given time. Assigning the same IP to two devices simultaneously will cause an IP address conflict, resulting in connectivity issues for both devices. Most modern routers handle this automatically through DHCP, but manual static IP assignments require careful management to avoid conflicts.

Related IP Addresses in the 192.168.100.x Subnet

The 192.168.100.0/24 subnet contains 254 usable host addresses, ranging from 192.168.100.1 to 192.168.100.254. Several of these addresses are commonly encountered in home and small-office networks. Here are the most notable ones you may come across:

• 192.168.100.1 — The most common default gateway address in this subnet, used by Motorola, Arris, Huawei, ZyXEL, and TP-Link modem-router combos. This is the address you would typically use to access your router's admin panel.
• 192.168.100.2 — Usually the first DHCP-assigned address in the subnet, often given to the first device that connects to the router.
• 192.168.100.3 through 192.168.100.7 — Sequentially assigned DHCP addresses for additional devices connecting to the network.
• 192.168.100.8 — The current address on this page; commonly the eighth DHCP-assigned device or a manually configured static IP for a specific network device.
• 192.168.100.10 — A popular choice for static IP assignment to managed switches, access points, or NAS devices due to its easy-to-remember format.
• 192.168.100.100 — Sometimes used as the start of a DHCP pool on networks where lower addresses are reserved for static assignments.
• 192.168.100.254 — Occasionally used as an alternative gateway address on some ISP-configured devices, or as the last assignable host address in the subnet.

If you are managing a network on the 192.168.100.x subnet, it is good practice to reserve the lower addresses (e.g., .1 through .20) for static assignments to infrastructure devices such as routers, switches, printers, and access points, and allow DHCP to assign the higher addresses dynamically to client devices like laptops and smartphones.

For other common private gateway addresses outside this subnet, you may also want to explore 192.168.0.1, 192.168.2.1, 192.168.10.1, and 10.0.0.1.

Frequently Asked Questions About 192.168.100.8

Is 192.168.100.8 a router's default gateway?

192.168.100.8 is not typically a router's default gateway address. The most common gateway in the 192.168.100.x subnet is 192.168.100.1, used by brands like Motorola, Arris, Huawei, and ZyXEL. The address 192.168.100.8 is more commonly a DHCP-assigned address for a connected device, or a manually configured static IP within the same subnet.

Why does my device show 192.168.100.8 as its IP address?

Your device has been assigned 192.168.100.8 by your router's DHCP server, meaning it was the eighth available address handed out in the 192.168.100.x pool. This is normal behavior. Your router's gateway — the address you use to access admin settings — is most likely 192.168.100.1.

Can I use 192.168.100.8 as a static IP for my printer or camera?

Yes. You can assign 192.168.100.8 as a static IP to any device on your network, such as a printer, IP camera, or NAS drive. To do this, either configure the static IP directly on the device itself, or set up a DHCP reservation in your router's admin panel (accessible via 192.168.100.1) so that the router always assigns 192.168.100.8 to that device's MAC address.

What is the subnet mask for 192.168.100.8?

The default subnet mask for 192.168.100.8 is 255.255.255.0, which defines the 192.168.100.0/24 network. This means all devices with addresses from 192.168.100.1 to 192.168.100.254 are on the same local network and can communicate directly with each other without needing to go through a router.

Which brands use the 192.168.100.x subnet?

The 192.168.100.x subnet is most commonly associated with cable modem and modem-router combo devices from Motorola, Arris, Huawei, ZyXEL, and certain ISP-customized TP-Link models. If your network uses this subnet, your default gateway is almost certainly 192.168.100.1.

What should I do if there is an IP conflict with 192.168.100.8?

If two devices on your network are both assigned 192.168.100.8, you will experience an IP address conflict causing connectivity problems for both. To resolve this, log in to your router's admin panel at 192.168.100.1 and check the DHCP client list. Identify which devices are using 192.168.100.8 and either release one device's IP lease, change one device's static IP assignment, or adjust your DHCP pool to avoid the conflict.