ns0.zen.co.uk has one IP number , which also has a corresponding reverse pointer. ns0.lostsoul.net cnames to this hostname. ns0.crosbynet.co.uk point to the same IP. pcs.net, d2l.com, nnac.org, cmgs.org, mnh.co.uk and at least 100 other hosts use this as a nameserver. zen.co.uk is a domain controlled by two nameservers at zen.co.uk themselves. They are on the same IP network. Incoming mail for zen.co.uk is handled by one mailserver having a total of six IP numbers. All of them are on the same IP network. zen.co.uk has one IP number. ns0.zen.co.uk is hosted on a server in United Kingdom.