ttddt.com scored better than 93.77% of 40,000,000+ domain names in the Domomark database.
ttddt.com is a 5 character word. It is a excellent domain length for people to type quickly.
Top Level Domain
ttddt.com is the best TLD due to approximately 60% of top 300,000 sites uses '.com'. People are more habitually to type .com than other TLD.
ttddt is not a dictionary word but it contains dictionary words. Dictionary is most important to people because they will remember better with dictionary words. This domain is contained with tdd, ddt.
Distinctivity is the most important factor of all. The domain name ttddt.com has a poor distinctivity factor. ttddt.com makes a poor domain name. Majority of users will not be able to come back to your website because they cannot rememeber the domain name or have problem typing ttddt.com.