uasd.net.do, uasd.edu.do and uasd.com.do use this as a nameserver. uasd.edu.do is a domain controlled by two nameservers at uasd.edu.do themselves. They are on different IP networks. Incoming mail for uasd.edu.do is handled by seven mailservers having a total of 28 IP numbers. Some of them are on the same IP network. uasd.edu.do has one IP number.