Do you use Echo devices by Amazon? Do you know that they typically come with Sidewalk bridge turned on by default? Amazon Sidewalk is a mesh network that uses LoRa among other things for long distance communication. Sidewalk device in a bridge mode will share it's Internet connection with some random device, sometimes half a mile away. While it's low bandwidth did you really signed up for that when you bought it? If not - disable it.
#punkprivacy