I'm dealing with such attack, so if you'd like, you can send me IPv4 addresses, and I'll grep my logs for them. Email address is on the website linked on my profile.

As for what you can do on your own, it really depends on your network. OpenWRT routers can run tcpdump, so you can check for suspicious connections or DNS requests, but it gets really hard to tell if you have lots of cloud-tethered devices at home. IoT, browser extensions, and smartphone applications are the usual suspects.