Public Class DomainWhois
Private Function HtmlErase(ByVal HtmlCode As String) As String
Return Regex.Replace(HtmlCode, "<(.|n)*?>", String.Empty)
End Function

Public Function GetWhois(ByVal DomainName As String) As String
Dim WhoisResult As String = String.Empty
Dim Selected_WhoIs_Server As String = String.Empty
Dim WhoistenGelenler As String = String.Empty
Try
Dim SplitDomain As String() = DomainName.Trim().Split(".")
Dim DomainTLD As String = SplitDomain(SplitDomain.Length - 1)


Select Case DomainTLD
Case "ad"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "ae"
Selected_WhoIs_Server = "whois.aeda.net.ae"
Exit Select
Case "aero"
Selected_WhoIs_Server = "whois.aero"
Exit Select
Case "af"
Selected_WhoIs_Server = "whois.nic.af"
Exit Select
Case "ag"
Selected_WhoIs_Server = "whois.nic.ag"
Exit Select
Case "ai"
Selected_WhoIs_Server = "whois.ai"
Exit Select
Case "al"
Selected_WhoIs_Server = "whois.ai"
Exit Select
Case "am"
Selected_WhoIs_Server = "whois.amnic.net"
Exit Select
Case "arpa"
Selected_WhoIs_Server = "whois.iana.org"
Exit Select
Case "as"
Selected_WhoIs_Server = "whois.nic.as"
Exit Select
Case "asia"
Selected_WhoIs_Server = "whois.nic.asia"
Exit Select
Case "at"
Selected_WhoIs_Server = "whois.nic.at"
Exit Select
Case "au"
Selected_WhoIs_Server = "whois.ausregistry.net"
Exit Select
Case "az"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "be"
Selected_WhoIs_Server = "whois.dns.be"
Exit Select
Case "bg"
Selected_WhoIs_Server = "whois.register.bg"
Exit Select
Case "biz"
Selected_WhoIs_Server = "whois.biz"
Exit Select
Case "bj"
Selected_WhoIs_Server = "whois.nic.bj"
Exit Select
Case "bo"
Selected_WhoIs_Server = "whois.nic.bo"
Exit Select
Case "by"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "bz"
Selected_WhoIs_Server = "bzwhois.verisign-grs.co"
Exit Select
Case "ca"
Selected_WhoIs_Server = "whois.cira.ca"
Exit Select
Case "cat"
Selected_WhoIs_Server = "whois.cat"
Exit Select
Case "cc"
Selected_WhoIs_Server = "ccwhois.verisign-grs.com"
Exit Select
Case "ch"
Selected_WhoIs_Server = "whois.nic.ch"
Exit Select
Case "ci"
Selected_WhoIs_Server = "whois.nic.ci"
Exit Select
Case "ck"
Selected_WhoIs_Server = "whois.ck-nic.org.ck"
Exit Select
Case "cl"
Selected_WhoIs_Server = "whois.nic.cl"
Exit Select
Case "cn"
Selected_WhoIs_Server = "whois.cnnic.net.cn"
Exit Select
Case "com"
'.com domaini için farklı whois sunucularından birini seçebilirsiniz.
'Selected_WhoIs_Server = "whois.opensrs.net"
Selected_WhoIs_Server = "whois.internic.net"
'Selected_WhoIs_Server = "whois.verisign-grs.com"
'Selected_WhoIs_Server = "whois.++++++++++.net"
Exit Select
Case "coop"
Selected_WhoIs_Server = "whois.nic.coop"
Exit Select
Case "cx"
Selected_WhoIs_Server = "whois.nic.cx"
Exit Select
Case "cy"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "cz"
Selected_WhoIs_Server = "whois.nic.cz"
Exit Select
Case "de"
Selected_WhoIs_Server = "whois.denic.de"
Exit Select
Case "dk"
Selected_WhoIs_Server = "whois.dk-hostmaster.dk"
Exit Select
Case "dm"
Selected_WhoIs_Server = "whois.nic.dm"
Exit Select
Case "do"
Selected_WhoIs_Server = "ns.nic.do"
Exit Select
Case "ec"
Selected_WhoIs_Server = "whois.nic.ec"
Exit Select
Case "edu"
Selected_WhoIs_Server = "whois.educause.edu"
Exit Select
Case "ee"
Selected_WhoIs_Server = "whois.eenet.ee"
Exit Select
Case "eg"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "es"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "eu"
Selected_WhoIs_Server = "whois.eu"
Exit Select
Case "fi"
Selected_WhoIs_Server = "whois.ficora.fi"
Exit Select
Case "fo"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "fr"
Selected_WhoIs_Server = "whois.nic.fr"
Exit Select
Case "ga"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "gb"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "gd"
Selected_WhoIs_Server = "whois.adamsnames.com"
Exit Select
Case "ge"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "gg"
Selected_WhoIs_Server = "whois.gg"
Exit Select
Case "gi"
Selected_WhoIs_Server = "whois2.afilias-grs.net"
Exit Select
Case "gl"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "gm"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "gov"
Selected_WhoIs_Server = "whois.dotgov.gov"
Exit Select
Case "gr"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "gs"
Selected_WhoIs_Server = "whois.nic.gs"
Exit Select
Case "gy"
Selected_WhoIs_Server = "whois.registry.gy"
Exit Select
Case "hk"
Selected_WhoIs_Server = "whois.hkirc.hk"
Exit Select
Case "hm"
Selected_WhoIs_Server = "webhost1.capital.hm"
Exit Select
Case "hn"
Selected_WhoIs_Server = "whois2.afilias-grs.net"
Exit Select
Case "hr"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "ht"
Selected_WhoIs_Server = "whois.nic.ht"
Exit Select
Case "hu"
Selected_WhoIs_Server = "whois.nic.hu"
Exit Select
Case "ie"
Selected_WhoIs_Server = "whois.domainregistry.ie"
Exit Select
Case "il"
Selected_WhoIs_Server = "whois.isoc.org.il"
Exit Select
Case "im"
Selected_WhoIs_Server = "whois.nic.im"
Exit Select
Case "in"
Selected_WhoIs_Server = "whois.inregistry.net"
Exit Select
Case "info"
Selected_WhoIs_Server = "whois.afilias.net"
Exit Select
Case "int"
Selected_WhoIs_Server = "whois.iana.org"
Exit Select
Case "io"
Selected_WhoIs_Server = "whois.nic.io"
Exit Select
Case "ir"
Selected_WhoIs_Server = "whois.nic.ir"
Exit Select
Case "is"
Selected_WhoIs_Server = "whois.isnic.is"
Exit Select
Case "it"
Selected_WhoIs_Server = "whois.nic.it"
Exit Select
Case "je"
Selected_WhoIs_Server = "whois.je"
Exit Select
Case "jo"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "jobs"
Selected_WhoIs_Server = "jobswhois.verisign-grs.com"
Exit Select
Case "jp"
Selected_WhoIs_Server = "whois.jprs.jp"
Exit Select
Case "ke"
Selected_WhoIs_Server = "whois.kenic.or.ke"
Exit Select
Case "kg"
Selected_WhoIs_Server = "whois.domain.kg"
Exit Select
Case "ki"
Selected_WhoIs_Server = "whois.nic.ki"
Exit Select
Case "kp"
Selected_WhoIs_Server = "whois.kcce.kp"
Exit Select
Case "kr"
Selected_WhoIs_Server = "whois.nic.or.kr"
Exit Select
Case "kz"
Selected_WhoIs_Server = "whois.nic.kz"
Exit Select
Case "la"
Selected_WhoIs_Server = "whois.nic.la"
Exit Select
Case "li"
Selected_WhoIs_Server = "whois.nic.li"
Exit Select
Case "lt"
Selected_WhoIs_Server = "whois.domreg.lt"
Exit Select
Case "lu"
Selected_WhoIs_Server = "whois.dns.lu"
Exit Select
Case "lv"
Selected_WhoIs_Server = "whois.nic.lv"
Exit Select
Case "ly"
Selected_WhoIs_Server = "whois.nic.ly"
Exit Select
Case "ma"
Selected_WhoIs_Server = "whois.iam.net.ma"
Exit Select
Case "mc"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "md"
Selected_WhoIs_Server = "whois.nic.md"
Exit Select
Case "me"
Selected_WhoIs_Server = "whois.meregistry.net"
Exit Select
Case "mg"
Selected_WhoIs_Server = "whois.nic.mg"
Exit Select
Case "mk"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "mn"
Selected_WhoIs_Server = "whois.nic.mn"
Exit Select
Case "mobi"
Selected_WhoIs_Server = "whois.dotmobiregistry.net"
Exit Select
Case "ms"
Selected_WhoIs_Server = "whois.nic.ms"
Exit Select
Case "mt"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "mu"
Selected_WhoIs_Server = "whois.nic.mu"
Exit Select
Case "museum"
Selected_WhoIs_Server = "whois.museum"
Exit Select
Case "mx"
Selected_WhoIs_Server = "whois.nic.mx"
Exit Select
Case "my"
Selected_WhoIs_Server = "whois.mynic.net.my"
Exit Select
Case "na"
Selected_WhoIs_Server = "whois.na-nic.com.na"
Exit Select
Case "name"
Selected_WhoIs_Server = "whois.nic.name"
Exit Select
Case "net"
Selected_WhoIs_Server = "whois.verisign-grs.com"
Exit Select
Case "nl"
Selected_WhoIs_Server = "whois.domain-registry.nl"
Exit Select
Case "no"
Selected_WhoIs_Server = "whois.norid.no"
Exit Select
Case "nu"
Selected_WhoIs_Server = "whois.nic.nu"
Exit Select
Case "nz"
Selected_WhoIs_Server = "whois.srs.net.nz"
Exit Select
Case "org"
Selected_WhoIs_Server = "whois.publicinterestregistry.net"
Exit Select
Case "pe"
Selected_WhoIs_Server = "kero.yachay.pe"
Exit Select
Case "pl"
Selected_WhoIs_Server = "whois.dns.pl"
Exit Select
Case "pm"
Selected_WhoIs_Server = "whois.nic.pm"
Exit Select
Case "pr"
Selected_WhoIs_Server = "whois.nic.pr"
Exit Select
Case "pro"
Selected_WhoIs_Server = "whois.registrypro.pro"
Exit Select
Case "pt"
Selected_WhoIs_Server = "whois.dns.pt"
Exit Select
Case "re"
Selected_WhoIs_Server = "whois.nic.re"
Exit Select
Case "ro"
Selected_WhoIs_Server = "whois.rotld.ro"
Exit Select
Case "ru"
Selected_WhoIs_Server = "whois.ripn.net"
Exit Select
Case "sa"
Selected_WhoIs_Server = "whois.saudinic.net.sa"
Exit Select
Case "sb"
Selected_WhoIs_Server = "whois.nic.net.sb"
Exit Select
Case "sc"
Selected_WhoIs_Server = "whois2.afilias-grs.net"
Exit Select
Case "se"
Selected_WhoIs_Server = "whois.iis.se"
Exit Select
Case "sg"
Selected_WhoIs_Server = "whois.nic.net.sg"
Exit Select
Case "sh"
Selected_WhoIs_Server = "whois.nic.sh"
Exit Select
Case "si"
Selected_WhoIs_Server = "whois.arnes.si"
Exit Select
Case "sk"
Selected_WhoIs_Server = "whois.sk-nic.sk"
Exit Select
Case "sm"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "sn"
Selected_WhoIs_Server = "whois.nic.sn"
Exit Select
Case "so"
Selected_WhoIs_Server = "whois.nic.so"
Exit Select
Case "st"
Selected_WhoIs_Server = "whois.nic.st"
Exit Select
Case "su"
Selected_WhoIs_Server = "whois.ripn.net"
Exit Select
Case "tc"
Selected_WhoIs_Server = "whois.adamsnames.tc"
Exit Select
Case "tel"
Selected_WhoIs_Server = "whois.nic.tel"
Exit Select
Case "tf"
Selected_WhoIs_Server = "whois.nic.tf"
Exit Select
Case "th"
Selected_WhoIs_Server = "whois.thnic.net"
Exit Select
Case "tk"
Selected_WhoIs_Server = "whois.dot.tk"
Exit Select
Case "tl"
Selected_WhoIs_Server = "whois.nic.tl"
Exit Select
Case "tm"
Selected_WhoIs_Server = "whois.nic.tm"
Exit Select
Case "tn"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "to"
Selected_WhoIs_Server = "whois.tonic.to"
Exit Select
Case "tr"
Selected_WhoIs_Server = "whois.nic.tr"
Exit Select
Case "travel"
Selected_WhoIs_Server = "whois.nic.travel"
Exit Select
Case "tv"
Selected_WhoIs_Server = "tvwhois.verisign-grs.com"
Exit Select
Case "tw"
Selected_WhoIs_Server = "whois.twnic.net.tw"
Exit Select
Case "ua"
Selected_WhoIs_Server = "whois.net.ua"
Exit Select
Case "ug"
Selected_WhoIs_Server = "whois.co.ug"
Exit Select
Case "uk"
Selected_WhoIs_Server = "whois.nic.uk"
Exit Select
Case "us"
Selected_WhoIs_Server = "whois.nic.us"
Exit Select
Case "uy"
Selected_WhoIs_Server = "whois.nic.org.uy"
Exit Select
Case "uz"
Selected_WhoIs_Server = "whois.cctld.uz"
Exit Select
Case "va"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "vc"
Selected_WhoIs_Server = "whois2.afilias-grs.net"
Exit Select
Case "ve"
Selected_WhoIs_Server = "whois.nic.ve"
Exit Select
Case "vg"
Selected_WhoIs_Server = "whois.adamsnames.tc"
Exit Select
Case "wf"
Selected_WhoIs_Server = "whois.nic.wf"
Exit Select
Case "ws"
Selected_WhoIs_Server = "whois.website.ws"
Exit Select
Case "yt"
Selected_WhoIs_Server = "whois.nic.yt"
Exit Select
Case "yu"
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
Case "xxx"
Selected_WhoIs_Server = "whois.nic.xxx"
Exit Select
Case Else
Selected_WhoIs_Server = "whois.ripe.net"
Exit Select
End Select

Dim tcpc As New TcpClient()
tcpc.Connect(Selected_WhoIs_Server, 43)
Dim strDomain As String = DomainName.Trim() + System.Environment.NewLine
Dim arrDomain As Byte() = Encoding.ASCII.GetBytes(strDomain.ToCharArray())
Dim s As Stream = tcpc.GetStream()
s.Write(arrDomain, 0, strDomain.Length)
Dim sr As New StreamReader(tcpc.GetStream(), Encoding.[Default])
WhoistenGelenler = sr.ReadToEnd()
tcpc.Close()
sr.Close()

WhoisResult = HtmlErase(WhoistenGelenler)

Catch e As Exception
WhoisResult = "Whois Error : " & e.Message
End Try
Return WhoisResult
End Function

End Class