Get device names of connected devices to android hotspot created by my app

I have seen many questions but almost all of them, try to find the IP address and mac address of the connected devices which is already implemented in my code. Now the thing that I need is the name of the connected devices. (eg. NAVID-PC)

Android itself shows these names in the hotspot part of the settings app, so I think there must be a way for it.

I get this output from arp file located in /proc/net/arp:

IP address       HW type     Flags       HW address            Mask     Device
192.168.43.128   0x1         0x0         f0:27:65:3d:6b:77     *        wlan0
192.168.43.131   0x1         0x2         6c:71:d9:52:55:a5     *        wlan0

Another question! what are HW type and Flags in this file? I figured out that 0x2 flag means that the device is connected now. Is it correct?

Thanks,

Navid