What firewall ip do i let through for hive

Hi,
In my house i’ve got all my iot and home automation devices behind a strict network with a strict firewall and i was just wondering what ip do i let through my firewall for the hive component

hive.py in the ha source uses pyhiveapi.

pyhiveapi connects (by the look of it) to https://beekeeper.hivehome.com/1.0/global/login