mail.firstisp.net has one IP number , but no corresponding reverse pointer. mail.ispsa.net, mail.inx.co.za, mail.ngoye.com, mail.few.co.za, mail.mogale.com and at least 100 other hosts point to the same IP. firstisp.net is delegated to four nameservers, however two delegated nameservers are missing in the zone and two other nameservers are listed instead. Some of them are on the same IP network. Incoming mail for firstisp.net is handled by four mailservers. All of them are on the same IP network. firstisp.net has one IP number. mail.firstisp.net is hosted on a server in South Africa.