We very often get "My server IP says it belongs to...(provider of IP space)" and yes we know, Until we get issued a AS number from RIPE or ARIN we have to rent/lease our IP's from some providers.
In places we co-locate in we manage all the switching and routing of our leased IP address's, in places we rent we either announce some of our leased IP's or rent directly from them if announcing is not an option.
EDIT: We now have our own AS number which you can find listed in the knowledgebase but not all datacentres we use provide us with DDoS protected BGP sessions, at those places we tunnel to the closest OVH datacentre so it is still DDoS protected.
