Hola,
Primero puedes ir a
www.checkdns.net y alli ver los DNS que tiene el dominio,
Found NS record: ns3.nic-reg-dns.com[66.206.26.1], was resolved to IP address by a.gtld-servers.net
Found NS record: ns4.nic-reg-dns.com[66.206.19.2], was resolved to IP address by a.gtld-servers.net
Domain has 2 DNS server(s)
Luego puedes ir a
www.dnsstuff.com y en el tercer campo central ,donde dice Whois alli ingresas uno de los IPs de los DNS y te determinara el proveedor final de alojamiento.
OrgName: Cyber World Internet Services
OrgID: CWIS
Address: 12402 N. Division St. #240
City: Spokane
StateProv: WA
PostalCode: 99218
Country: US
NetRange: 66.206.0.0 - 66.206.31.255
CIDR: 66.206.0.0/19
NetName: CYBERWORLD-INT
NetHandle: NET-66-206-0-0-1
Parent: NET-66-0-0-0-0
NetType: Direct Allocation
NameServer: NS0.NIC-REG-DNS.COM
NameServer: NS1.NIC-REG-DNS.COM
Comment: ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE
RegDate: 2001-12-04
Updated: 2002-03-08
TechHandle: AS1239-ARIN
TechName: Slocombe, Alvin
TechPhone: +1-509-343-2100
TechEmail: ******@cwiservices.com
OrgTechHandle: AS1239-ARIN
OrgTechName: Slocombe, Alvin
OrgTechPhone: +1-509-343-2100
OrgTechEmail: ******@cwiservices.com
# ARIN WHOIS database, last updated 2004-11-18 19:10
# Enter ? for additional hints on searching ARIN's WHOIS database.
Espero te sirva de ayuda y buenos vientos para tus proyectos.