There's /hub/advanced/ipSettings, but if you're using DHCP, that's all it will say. (Though I'd have no reason to suspect that's not exactly what it means, correct netmask and all.)
If you want a practical way to test, I suppose the Network Test tool on Network Setup would tell you what is reachable from your hub, or you could use another device on your network to go the other direction.
except it would say that last time. too. devices have needed to be rebooted to get the new subnet even though i did reboot the dhcp server first and they still had old subnet
ya i did thanks. was just trying to verify they took.. but guess there is no way i could already ping it o the .11 network from my .10 even when it still had the wrong netmask..