Do I have a PoE filter?

We can't tell from here.. May we ask why you are asking ? Are you using MoCA and having a problem with unknown devices on your home network . Is this a multiple dwelling  / apartment building or a private home ?

Hello @blazeroni, Thank you for taking the time out of your day to leave a post. I hope your week is off to a great start. I would be glad to check your location to see if there is a filter. If you could send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account, I'd be more than happy to look into this for you.
 To send a Direct Message, please click on the “Direct Message” icon in the top-right corner of the screen, next to the bell icon, click the "New message" (pencil and paper) icon, then type or select "Xfinity Support". Type your message in the text area near the bottom of the window and press Enter to send your message and initiate a live session.