main account; primary account; real-name account
Used on social media and online services to refer to one's primary account, often contrasted with sub-accounts or anonymous accounts. メインアカウント is a common synonym.
See also: メインアカウント
I post about work on my main account.
I use my main account and sub-account differently.
Compound of 本 (hon, 'main') and アカウント (akaunto, 'account').