TUP1 is similar with TOP1
TUP can mean a lot of things
Delivery: Free and fast domain push to your account at its registrar.
Payment: paypal (Bank transfer, bitcoin, alipay or wechat also available, contact us: email@example.com)
Please include in your PayPal note your Dynadot forum account email and account for a quick push.
Pronounceable! Suitable for trademark of business.. It’s suitable for a service, an app, or a company, quite a few things!