You can find out the name of your device at any time through the Alexa™ skill.
Launch the Voice Atlas Alexa™ skill on your device. You can say, “Alexa, ask my atlas what is my device name.”
You may also launch the skill by saying, “Alexa, open my atlas.”
Wait to be prompted to ask, “what is my device name?”
Alexa will respond with the name of the current device activated and linked to your account.