owa.ulker.com.tr has one IP number , which also has a corresponding reverse pointer. ulker.com.tr is a domain controlled by two nameservers at teletektelekom.com. They are on the same IP network. Incoming mail for ulker.com.tr is handled by three mailservers at ulker.com.tr themselves. Two of them are on the same IP network. ulker.com.tr has one IP number. owa.ulker.com.tr is hosted on a server in Turkey.