You seem to be mixing your terms. If you want to log on to the modem, the default username is typically ‘admin’. The default password may be the serial number. The startup guide should have the information for your model. If not, just “Google” it. You should find something like the following, which is for an SB8200. If you are looking for a “network name”, that would normally apply to the SSID for a router. https://arris.my.salesforce-sites.com/consumers/articles/General_FAQs/SB8200-Web-Manager-Access#:~:text=The%20Web%20Manager%20is%20used,bottom%20label%20of%20the%20SB8200.SB8200 Example

Could you let us know the product’s model number to assist you further.