a.abc.com has two IP numbers. They are on the same IP network. This hostname cnames to a.abc.com.edgesuite.net. 73.ufc.com, www.yum.com, www.rbk.com, www.dtag.com, www.saab.com and at least 100 other hosts point to the same IP. abc.com is a domain controlled by four nameservers at dig.com. Two of them are on the same IP network. Incoming mail for abc.com is handled by four mailservers having a total of 16 IP numbers. Some of them are on the same IP network. abc.com has one IP number. a.abc.com is hosted on two servers in United States.