nsa2.broadnet.cz has one IP number , which also has a corresponding reverse pointer. ys.cz, hpl.cz, cet.cz, gcf.cz, cns.cz and at least 100 other hosts use this as a nameserver. broadnet.cz is a domain controlled by two nameservers at broadnet.cz themselves. They are on the same IP network. Incoming mail for broadnet.cz is handled by four mailservers. Some of them are on the same IP network. broadnet.cz has one IP number. nsa2.broadnet.cz is hosted on a server in Czech Republic.