Subnet Mask of

I’m at a Responsive Web Trends Conference in San Francisco hosted by Moboom. The network setup is a bit unorthodox. The subnet mask is set to Based on my experience, this network is /8, which allows up to 16,777,214 hosts. It uses the entire range of reserved private IP addresses starting from to Interesting setup. I just ran a speed test. Download is 50 Mbps and upload is 27 Mbps.