Question : Find whois in webhosting companies

Is it any way to find the complete information (of their hosting) of the company that where from they get their own hosting
For eg i host my site at www.ehostpros.com
Now i want to find out that from where ehostpros.com get hosting for their company

Answer : Find whois in webhosting companies

There are a number of things that you can do.

(1) You can perform a traceroute to the servers, to see what servers you step through to get to their site.  The last few steps:

  7    60 ms    60 ms    60 ms  208.172.129.2
  8    60 ms    60 ms    50 ms  ivhou-207-218-223-108.ev1.net [207.218.223.108]

  9    60 ms    60 ms    60 ms  ehostpros.com [66.98.149.112]

... from this, I would think that they are using servers from ev1.net.

(2) You can use the arin databases (http://www.arin.net) to see who is assigned their IP address block:

Search results for: 66.98.149.112


OrgName:    Everyones Internet, Inc.
OrgID:      EVRY
Address:    2600 Southwest Freeway
Address:    Suite 500
City:       Houston
StateProv:  TX
PostalCode: 77098
Country:    US

NetRange:   66.98.128.0 - 66.98.255.255
CIDR:       66.98.128.0/17
NetName:    EVRY-BLK-14
NetHandle:  NET-66-98-128-0-1
Parent:     NET-66-0-0-0-0
NetType:    Direct Allocation
NameServer: NS1.EV1.NET
NameServer: NS2.EV1.NET
Comment:    
RegDate:    2003-07-02
Updated:    2004-02-06

TechHandle: RW172-ARIN
TechName:   Williams, Randy
TechPhone:  +1-713-400-5400
TechEmail:  [email protected]

OrgAbuseHandle: ABUSE477-ARIN
OrgAbuseName:   ABUSE
OrgAbusePhone:  +1-713-400-5400
OrgAbuseEmail:  [email protected]

OrgNOCHandle: NOC1445-ARIN
OrgNOCName:   NOC
OrgNOCPhone:  +1-713-400-5400
OrgNOCEmail:  [email protected]

OrgTechHandle: RW172-ARIN
OrgTechName:   Williams, Randy
OrgTechPhone:  +1-713-400-5400
OrgTechEmail:  [email protected]

OrgTechHandle: VST3-ARIN
OrgTechName:   Stinson, Valarie
OrgTechPhone:  +1-713-400-5400
OrgTechEmail:  [email protected]

# ARIN WHOIS database, last updated 2005-02-01 19:10
# Enter ? for additional hints on searching ARIN's WHOIS database.

.... this also indicates ev1.net.

(3) While in this case, it doesn't give any additional information, VirusMinus is quite right;  often the technical contact and/or the name servers will give clues.  My favorite tool for this is whois.sc:

http://www.whois.sc/ehostpros.com