10.0.0.138 Login: Access Router Admin & WiFi Settings

10.0.0.138 is the default gateway IP address used by Telstra, Alcatel, Thomson, and certain Siemens DSL modems. Use the 10.0.0.138 login page to access your router's admin panel, change WiFi settings, and configure your network.

To access your router's admin panel, click below:

LOGIN  ADMIN

10.0.0.138 Default Login Credentials

Most routers using 10.0.0.138 come with these default username/password combinations:

If none work, check the sticker on the bottom of your router or factory reset your router to restore defaults.

How To Login to 10.0.0.138

1. Connect to your router — use an Ethernet cable or connect to your WiFi. You must be on the router's local network.
2. Open a web browser — type http://10.0.0.138 in the address bar (not the search bar) and press Enter.
3. Enter your credentials — use the defaults from the table above, or your custom credentials.
4. Access the admin panel — after login, you'll see the dashboard for managing all settings.

What Can You Do After Logging In?

WiFi & Network Settings

• Change your WiFi name (SSID) and password
• Switch wireless channel to reduce interference
• Set encryption to WPA2 or WPA3
• Create a guest WiFi network

Security Settings

• Change the admin password
• Block unwanted devices
• Set up parental controls and access schedules
• Enable MAC address filtering

Advanced Settings

• Set up port forwarding for gaming or servers
• Configure QoS (Quality of Service) for bandwidth priority
• Set up VPN on your router
• Configure Dynamic DNS (DDNS)

Maintenance

• Update router firmware
• Backup and restore configuration
• Factory reset the router
• Check who's connected to your WiFi

Common 10.0.0.138 Login Errors

Telstra Routers and 10.0.0.138

Telstra, Australia's largest telecommunications provider, uses 10.0.0.138 as the default gateway on many of its modem-router devices. The Telstra Smart Modem (manufactured by Technicolor or Arcadyan depending on the generation) and Telstra Gateway series are the most common devices that rely on this IP address. If you're an Australian NBN user with a Telstra-supplied device, 10.0.0.138 is almost certainly your gateway address.

On Telstra Smart Modem Gen 2 and Gen 3 units, the admin password is printed on a label on the bottom of the device rather than using a generic default. Look for a sticker that says "Admin Password" — this is different from your WiFi password. Earlier models like the Telstra Gateway Max used admin/Telstra as the default combination, but that practice was phased out for security reasons.

Once logged into a Telstra modem at 10.0.0.138, you can manage NBN connection settings, configure bridge mode if you want to use your own router, set up DHCP reservations, and adjust wireless channels. Telstra modems also support band steering, which automatically moves devices between 2.4 GHz and 5 GHz bands for optimal performance. Navigate to WiFi > Advanced to toggle this feature.

What Is 10.0.0.138?

10.0.0.138 is a private IP address defined by RFC 1918. It falls within the Class A private range of 10.0.0.0 to 10.255.255.255, which provides over 16 million usable addresses. This massive address space is why ISPs like Telstra prefer the 10.x.x.x range — it avoids conflicts when customers connect VPN tunnels or run multiple subnets at home.

Unlike public IP addresses that are routable on the internet, private addresses like 10.0.0.138 are only accessible within your local network. Your router uses Network Address Translation (NAT) to map traffic between your private LAN addresses and your single public IP address provided by your ISP. This means 10.0.0.138 will never appear as a source address in internet traffic — it exists solely for local communication between your devices and your router.

Router manufacturers assign a specific private IP as the default gateway during production. Telstra and associated OEMs chose 10.0.0.138 rather than more common addresses like 192.168.1.1 to reduce the chance of IP conflicts when multiple network devices are daisy-chained together. If you have a separate router behind your Telstra modem, using different IP ranges prevents overlapping address spaces.

10.0.0.138 vs Other Router IPs

Video Tutorial

Pro Tip: After your first login, immediately change the default admin password to prevent unauthorized access. Also consider updating the firmware for security patches.

Frequently Asked Questions

What is 10.0.0.138 used for?

10.0.0.138 is used as a default gateway IP address primarily by Telstra-supplied modems and routers in Australia. It provides access to the admin panel where you can manage WiFi settings, security options, and network configuration. Alcatel, Thomson, and some Siemens DSL devices also use this address as their default gateway.

Why can't I access 10.0.0.138?

Common reasons include not being connected to the router's network, a typo in the address bar, or the router using a different default IP. Make sure your device is connected via Ethernet or WiFi directly to the modem. Try finding your router IP to confirm the correct address.

What is the default username and password for 10.0.0.138?

For older Telstra modems, try admin/Telstra or admin/admin. Newer Telstra Smart Modems have a unique admin password printed on a sticker on the bottom of the device. Check the credentials table above for other brand defaults.

How do I reset my router password?

Hold the reset button (usually a small pinhole on the back) for 10-15 seconds until the lights flash. This performs a factory reset and restores all settings to defaults, including the admin password.

Is 10.0.0.138 the same as 192.168.1.1?

No. Both are private IP addresses used as router gateways, but they belong to different address classes. 10.0.0.138 is a Class A address used mainly by Telstra and similar ISP devices, while 192.168.1.1 is a Class C address common on Linksys, Asus, and Cisco routers.

How do I set my Telstra modem to bridge mode?

Login to 10.0.0.138, navigate to Internet > WAN Settings, and enable Bridge Mode. This disables the modem's router functions so you can use your own router for WiFi and DHCP. Note that bridge mode disables the Telstra modem's WiFi and firewall.

How do I change my WiFi password at 10.0.0.138?

Login to the admin panel, go to WiFi or Wireless settings, locate the password or security key field, enter your new password, and save. See our WiFi name change guide for step-by-step instructions.