As far as I understand several internet articles the hotspot sharing ( ICS: internet connection sharing ) could be the reason for the domain mshome.net. It would be interesting to see a wireshark network trace without using the PC as hotspot for your phone.
What do the following commands return if execute them in a command window on your PC:
nslookup openhabian
ping openhabian
ping IP-address-of-openhabian-here