ns.fastq.com has one IP number , which also has a corresponding reverse pointer. ns.amug.org, hassanii.alamut.net and cabinaccessories.com point to the same IP. rwf.net, upt.org, amug.org, amug.net, 8dirt.net and at least 100 other hosts use this as a nameserver. visxjobs.com use this as a mailserver. fastq.com is a domain controlled by two nameservers at fastq.com themselves. They are on the same IP network. Incoming mail for fastq.com is handled by three mailservers having a total of four IP numbers. There are four duplicated IP numbers. Some of them are on the same IP network. fastq.com has one IP number. ns.fastq.com is hosted on a server in United States.