Yes, you can add as many domains and domain groups as you would like to one Cookiebot account.
If you would like the domains to 'behave' the same way, you should add them to the same 'domain group'. All the domains and subdomains in the same domain group share the same cbid (‘CookiebotIdentifier, which is the serial number that is included in the script. Each domain group has a unique cbid), use the same cookie consent banner template, the same logo, the same styling of the banner etc.
Also, it is possible to use ‘Bulk Consent’ for all the domains and subdomains within one domain group to ensure that a website visitor is asked for a joint consent covering all the domains/subdomains only the first time he visits one of those domains.
If you would like the domains to have different banners or styling, you can set up additional domain groups. You can also add different banner configurations for one domain for visitors from different locations: Using multiple banners on one website.
Please note that our subscriptions are priced per domain and this is not affected by the number of domain groups in use. See also our pricing page.