Do Dragonborns get unarmored defense?

Now, I might just be stupid or not have seen it but, I’ve been looking and saw that draconic bloodline sorcerers get unarmored defense for “draconic bloodline”. But, do Dragonborns get this for being Dragonborn? Like I said, it’s a simple question but I can’t find the answer and my Dragonborn player wants to know because he heard that our sorcerer gets it, but he doesn’t.