For any device labeled "Web 3.1," look for a sticker. It will list three critical pieces of information:
Example from a Technicolor web 3.1 modem (Comcast Xfinity): web 3.1 default username and password
If the common combinations above do not work, you must locate the unique factory credential specific to your hardware. Here is how to find the web 3.1 default username and password for your specific model. For any device labeled "Web 3
If you are 100% certain you are using the correct web 3.1 default username and password but still cannot log in, consider these Web 3.1-specific failure points: Example from a Technicolor web 3
It is worth noting that the latest draft of the Web 3.1 specification (W3.1-DRAFT-09) recommends eliminating default passwords entirely. By Q4 2025, most new Web 3.1 gateways will ship with zero default credentials. Instead, they will use:
If your device is brand new and you cannot find a web 3.1 default username and password, it may already be a passwordless model. Check the manual for "Proof of Possession" enrollment.