Comcast Business Business Wireless Gateway (DPC3939B) default password & login IP
The Comcast Business Business Wireless Gateway (DPC3939B) default login is cusadmin / highspeed at http://10.1.10.1.
- Login address
- http://http://10.1.10.1
- Gateway IP
- 10.1.10.1
- Username
- cusadmin
- Password
- highspeed
Comcast Business's first row in the dataset — a distinct B2B product line and admin-tool credential model from the already-seeded residential Xfinity/Comcast rows. Official Quick Start Guide, 'Log In and Secure the Admin Tool': "Open a web browser ... Go to http://10.1.10.1 and the Login page appears. Enter cusadmin for Username. Enter highspeed for Password," noting the username "cusadmin" cannot be changed — distinct from the per-device Wireless Network Key (Wi-Fi password), which is unique-per-device and printed on the bottom label.
Factory reset
Hold the Reset button for 2-5 seconds for a soft reset; holding for 15 seconds or more restores full factory default settings (any changed passwords, content controls, or firewall settings are lost).
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FAQ
- What is the default password for the Comcast Business Business Wireless Gateway (DPC3939B)?
- The Comcast Business Business Wireless Gateway (DPC3939B) default login is cusadmin / highspeed at http://10.1.10.1.
- What is the default login IP for the Comcast Business Business Wireless Gateway (DPC3939B)?
- The Comcast Business Business Wireless Gateway (DPC3939B) default login IP is 10.1.10.1 — open http://10.1.10.1 in a browser on the router's own network.
- What is the default username for the Comcast Business Business Wireless Gateway (DPC3939B)?
- The Comcast Business Business Wireless Gateway (DPC3939B) default admin username is cusadmin. The matching default password is highspeed.
- How do I factory-reset the Comcast Business Business Wireless Gateway (DPC3939B)?
- Hold the Reset button for 2-5 seconds for a soft reset; holding for 15 seconds or more restores full factory default settings (any changed passwords, content controls, or firewall settings are lost).
Verification history (2)
Every time we've checked this model's default credentials, oldest first — including when nothing changed. Absence of change over time is itself the evidence.