Some clients show name, others only IP

[deHakkelaar]

Plus if Pi-hole were doing DHCP for your LAN instead of the router, you can tell Pi-hole to overrule the name advertised by the clients, if any, via DHCP to anything you like.
An older release of Pi-hole used to show how below:

Help configuring DHCP

Edit the names on the devices themselves. Most advertise a name or their own hostname via DHCP (the first tail). If nothing else, you could fiddle with below setting if the MAC of the device is not changing: [image]

I believe that setting is called dhcp.hosts now.