owa.udc.edu has two IP numbers. They are on the same IP network. pop.udc.edu, pop3.udc.edu, email.udc.edu, email8.udc.edu, webmail.udc.edu and at least five other hosts point to the same IP. www.owa.udc.edu are subdomains to this hostname. udc.edu is a domain controlled by five nameservers. Some of them are on the same IP network. Incoming mail for udc.edu is handled by four mailservers. Two of them are on the same IP network. udc.edu has one IP number. owa.udc.edu is hosted on two servers in United States.