They don't respond to ping either. I dropped them from Bitnodes crawler (https://github.com/ayeowch/bitnodes/blob/master/crawl.conf#L46) as they don't seem to be contributing to the network. The nodes are hosted by OVH and they give you free /24 IP block when you subscribe with them. So, it is likely that the nodes from 46.105.210.* are operated by the same owner.