192.168.12.1 Router Admin Login
Default admin IP for T-Mobile 5G Home Internet Gateways (Arcadyan KVD21, Sagemcom Fast 5688W, Nokia 5G21). Cellular signal stats and setup.
admin Brands that use 192.168.12.1
Log in to 192.168.12.1
Four steps, with help at each one if something doesn't work.
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Join the Wi-Fi network of your T-Mobile router, or plug a network cable into one of its LAN ports. You don't need internet access for this, only a connection to the router itself.
On a phone, turn off mobile data while you set things up, and switch off any VPN.
Can't find the network?
The Wi-Fi name (SSID) and its password are printed on a sticker on the bottom or back of the router.
If the router is new, plug it in and wait two minutes for its lights to settle before connecting.
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Type it in the address bar, not in a search box. Search engines can't reach your router.
The page won't load
Router addresses are numbers only. 192.168.l.l and 192.168.o.1 use letters and end up in a search engine instead.
Use http://, not https://, and try a private window if an old page is cached.
Your router may use a different address. Find it:
- Press Windows + R, type cmd and press Enter.
- Type ipconfig and press Enter.
- Read the number next to "Default Gateway".
- Open System Settings › Network.
- Select your Wi-Fi, then click Details.
- Open the TCP/IP tab and read "Router".
- Open Settings › Wi-Fi.
- Tap the ⓘ next to your network.
- Read the number next to "Router".
- Open Settings › Network & internet › Internet.
- Tap the gear next to your Wi-Fi network.
- Open Advanced and read "Gateway".
- Username adminPassword Printed on gateway sticker
Newer routers ship with a unique password printed on a sticker underneath, so check there before trying the defaults.
The password doesn't work
Try the other common pairs: admin / admin, admin / password, admin with an empty password, or user / user.
Routers from an internet provider often use a password printed on the label, not a standard one.
As a last resort, hold the recessed Reset button with a paperclip for 10–15 seconds. That erases every setting, including your Wi-Fi name and password, so you'll set the router up from scratch.
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Can't find these settings?
Menu names differ by brand. Admin password sits under System, Administration or Management. Wi-Fi security sits under Wireless or WLAN.
Write the new passwords down somewhere safe before you save them.
Is 192.168.12.1 your router?
Checks 8 common router addresses from this browser. Connect to your home Wi-Fi first.
- 192.168.12.1 T-Mobile, Arcadyan, Sagemcom Open
- 192.168.1.1 TP-Link, ASUS, Linksys Open
- 192.168.0.1 D-Link, Netgear, Tenda Open
- 192.168.2.1 Belkin, SMC, Siemens Open
- 192.168.1.254 Technicolor, Thomson, BT Home Hub Open
- 10.0.0.1 Xfinity (Comcast), Cisco, Apple AirPort Open
- 192.168.29.1 JioFiber (Reliance Jio) Open
- 192.168.178.1 AVM FRITZ!Box Open
Routers using 192.168.12.1
Verified factory default credentials and model specifications
| Hardware Model | Username | Password | Actions |
|---|---|---|---|
| admin | Printed on sticker under gateway | ||
| admin | Printed on gateway rear label | ||
| admin | Printed on gateway label | ||
| T-Mobile 5G Home Internet T-Mobile 5G Gateway Sagemcom FAST 5688W Wi-Fi 6 Gateway Wi-Fi 4G/5G Cellular | admin | Printed on gateway label | |
| admin | Printed on gateway label |
