ns-slave.free.org has one IP number , which also has a corresponding reverse pointer. eu.org, tmgo.net, bzhc.net, talou.org, si.eu.org and at least 100 other hosts use this as a nameserver. free.org is a domain controlled by three nameservers at free.org themselves. Two of them are on the same IP network. Incoming mail for free.org is handled by two mailservers also at free.org. They are on the same IP network. free.org has one IP number. ns-slave.free.org is hosted on a server in France.