How to identify device on network?

Today I noticed in Glasswire that there’s a device on my network I can’t identify. Every physical device I know of is accounted for, including my router. All devices I’m aware of have IPs from to - And now there’s one that has an IP of - Glasswire’s info has labeled it as “ARRIS Group, Inc.” on my LAN.

I checked to see if there was any software installed on my machine on the “first seen” date listed, but couldn’t find anything.

Any suggestions on how I can track this thing down?


It will probably be the WiFi adapter in your cable modem/router. Perhaps like this example where the same DHCP addresses range is used:

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Oh, OK. I understand now. Thank you, @Remah!