NTT Setup: How to Access Your NTT Home Gateway

If you have fiber internet in Japan, your router is likely an NTT home gateway from the FLET’S Hikari service, and the NTT setup page lives at the address ntt.setup or 192.168.1.1. The username is user, and rather than a factory password, you create the device password yourself on first access. The interface is mostly in Japanese, so this guide walks through the login, the first-time password setup, and the key menus, with the Japanese labels translated.

How to Log In to an NTT Home Gateway

1. Connect your computer or phone to the gateway, by Ethernet cable or its Wi-Fi. The default Wi-Fi name and password are on a sticker on the side or bottom of the unit, often on a removable card.
2. Open a browser, click the address bar at the top, and type http://ntt.setup or 192.168.1.1, then press Enter. Make sure it goes in the address bar, not a search box, or you will get search results instead.
3. Enter the username user and the device password. On most models the password is the one you created at first setup. A few models, such as the WBC V110M and RT-200KI, use admin as the username instead.
4. Click Login or OK to reach the settings.

First-Time Setup: You Create the Password

On a new or freshly reset NTT gateway, the first screen you see is 機器設定用パスワードの初期設定, which means “initial setup of the device password.” There is no factory password: you type your chosen password into both fields and press 設定 (meaning set, or apply). That password, with the username user, becomes your login from then on.

Record it somewhere safe, because if it is forgotten, the only way back is a factory reset. After setting the password, you land on the main settings page, where the internet connection settings expect the details from your ISP’s letter, since in Japan the line (NTT) and the internet service (So-net, OCN, Biglobe, Rakuten, and others) are separate contracts, and the ISP’s PPPoE username and password go into the gateway’s connection settings.

The Key Japanese Menu Labels

The interface is mostly Japanese, so these translations cover the essentials:

• 無線LAN設定 : wireless LAN (Wi-Fi) settings
• IEEE802.11b/g/n設定 (2.4GHz) : the 2.4 GHz band settings, with a matching entry for 5 GHz
• 無線ネットワーク名 (SSID) : the Wi-Fi network name
• 事前共有キー (PSK) : the Wi-Fi password (pre-shared key)
• 編集 : edit
• 設定 : set / apply
• 詳細設定 : advanced settings

Most browsers can also machine-translate the page, which works well enough for navigation.

How to Change Your NTT Wi-Fi Name and Password

1. Log in at ntt.setup.
2. Select 無線LAN設定 (wireless LAN settings).
3. Choose the band, such as IEEE802.11b/g/n設定 (2.4GHz), and click 編集 (edit).
4. Enter your new network name in the 無線ネットワーク名 (SSID) field.
5. Enter your new password in the 事前共有キー (PSK) field.
6. Click 設定 to apply.

Repeat for the 5 GHz band if your gateway is dual-band. After saving, devices reconnect with the new details, the same pattern as changing your Wi-Fi password on any router. Note that on some gateways, Wi-Fi is provided by a rental “wireless LAN card” from NTT, and the sticker details apply to that card’s network.

What to Do If You Cannot Log In

ntt.setup will not load. Use 192.168.1.1 instead, and confirm you are connected to the gateway’s network. On Windows, press Windows + R, type cmd, run ipconfig, and check the “Default Gateway” line reads 192.168.1.1.

The password is rejected. Remember the username is user (or admin on a few models), and the password is the one created at first setup, not anything printed on the label. The label’s password is for the Wi-Fi, which is separate. If the device password is lost, a factory reset is the way back.

The page is all Japanese. Use your browser’s translate feature, or follow the labeled steps above, since the menu structure matches.

Your internet is not working after setup. The gateway needs your ISP’s PPPoE details, from the letter your provider sent. NTT provides the line, but the ISP login is a separate credential that goes into the connection settings.

How to Reset an NTT Home Gateway

A factory reset erases the device password and all settings, including your ISP connection details, so have your ISP’s letter ready to re-enter them.

1. With the gateway powered on, find the recessed 初期化 (initialize) or Reset button.
2. Press and hold it with a pin for about 10 seconds, until the lights change, then release.
3. Wait for the gateway to restart, then go to ntt.setup, create a new device password, and re-enter your ISP’s connection details.

NTT East and NTT West units differ slightly in models and menus, so if in doubt, the support line for your region, or your Hikari collaboration provider, can walk through model specifics.

Wrapping Up

Accessing an NTT home gateway means going to ntt.setup or 192.168.1.1, logging in as user, and using the device password you created at the first-time 機器設定用パスワードの初期設定 screen. The Japanese menus follow a consistent structure, wireless settings under 無線LAN設定, with 編集 to edit and 設定 to apply, and a browser translation covers the rest. Keep the device password recorded, keep your ISP’s PPPoE letter safe, and the gateway is straightforward to manage even without Japanese.