Informative and reliable brand name that plays on the word "knowledge".
KnowledgeA has 10 letters and three syllables. Successful brands using three syllable names include Grammarly, Armani and Delicious.
Knowledgea.com is a dot com domain. Dot com domains are the most valuable domain extension in the world, used by famous websites like google.com. Once secured, a dot com all but guarantees no-one else can outrank you for your own name in the long run.