172.16.255.254 Admin Login

Updated 20 Sep 2026

172.16.255.254 is the address of SoftBank Hikari BBUnit gateways in Japan.

How to log in to 172.16.255.254

1. Connect your phone or computer to the router’s Wi-Fi or plug in a LAN cable.
2. Open Chrome, Safari, Edge or Firefox and type http://172.16.255.254 in the address bar (not the search box).
3. Enter the admin username and password — see the table below or the sticker on the router.
4. You are in. Change the Wi-Fi name and password, see connected devices or update the firmware.

Default 172.16.255.254 username and password

These are factory logins for devices that use 172.16.255.254. If you or your ISP changed the password, it will not work — reset the router to restore it.

“Official doc” rows link to the manufacturer’s or ISP’s own documentation, via the ssid.ai router dataset (CC BY 4.0).

Routers and ISPs that use 172.16.255.254

• SoftBankJapan · 172.16.255.254, 192.168.3.1

Common typing mistakes

Router addresses contain only numbers and dots. These versions will not open your router:

• l72.l6.255.254
• 172 16 255 254
• 172,16,255,254
• 172 16.255.254
• 17216255254
• http//172.16.255.254
• www.172.16.255.254

The correct address is 172.16.255.254.

Change your Wi-Fi name and password

1. Log in at 172.16.255.254 with the admin username and password.
2. Open the Wireless (or WLAN / Wi-Fi) section.
3. Change the SSID to set a new network name.
4. Set security to WPA2-PSK or WPA3 and type a new password of at least 12 characters in the “Password”, “Pre-Shared Key” or “WPA Passphrase” box.
5. Save or apply. Your devices will disconnect — reconnect them with the new password.

Need ideas for a strong password? See how to create a strong password.

172.16.255.254 not opening? Fixes that work

• Connect to the router first. Use its Wi-Fi or a LAN cable — mobile data will never reach 172.16.255.254.
• Type it in the address bar, not the search box, and include http:// — http://172.16.255.254. Many routers have no HTTPS page.
• Check for typos: only numbers and dots. The letter “l” or “o” in place of 1 or 0 will not work.
• Your router may use a different address. Check the default gateway (see above) or the label.
• Turn off VPN, proxy or “Private Relay”. They send traffic outside your home network.
• Try another browser or a private window, and clear the cache.
• Restart the router: unplug it for 30 seconds, then wait two minutes after plugging it back in.
• Still stuck? A factory reset restores the default address and password.

Find your router’s IP address

If the address on this page does not open, your router uses a different one. Your device already knows it — it is called the default gateway.

• Windows: press Win + R, type cmd, then run ipconfig. Look for “Default Gateway”.
• Mac: System Settings → Network → Wi-Fi → Details → TCP/IP → “Router”.
• Android: Settings → Wi-Fi → tap your network (or the gear icon) → “Gateway” or “Router”.
• iPhone / iPad: Settings → Wi-Fi → tap ⓘ next to your network → “Router”.
• Linux: run ip route | grep default.
• Label: most routers print the login address on a sticker underneath.

172.16.255.254 network details

172.16.255.254 is a private address, so it only works inside your home or office network. Anyone outside sees your public IP instead.

Frequently asked questions

Other router IP addresses

• 192.168.1.1
• 192.168.0.1
• 10.0.0.1
• 192.168.1.254
• 192.168.100.1
• 192.168.254.254
• 192.168.10.1
• 192.168.8.1