uucp.psg.com has one IP number , which is the same as for psg.com, via cname , which also has a corresponding reverse pointer. bogus.com, vaninst.ca, pathguy.com, www.psg.com, frcs.alt.za and at least 26 other hosts point to the same IP. salsa.gih.co.uk use this as a mailserver. psg.com is a domain controlled by three nameservers. All of them are on different IP networks. Incoming mail for psg.com is handled by one mailserver at com. uucp.psg.com is hosted on a server in Japan.