smx.abv.bg has ten IP numbers. All of them are on the same IP network. pmx.abv.bg, mx9.abv.bg, mx2.abv.bg, mx4.abv.bg, sg3.abv.bg and at least five other hosts point to the same IP. abv.bg, gbg.bg and gyuvetch.bg use this as a mailserver. abv.bg is a domain controlled by two nameservers at netinfo.bg. They are on different IP networks. Incoming mail for abv.bg is handled by two mailservers having a total of ten IP numbers. There are ten duplicated IP numbers. Some of them are on the same IP network. abv.bg has one IP number. smx.abv.bg is hosted on ten servers in Bulgaria.