Exhibit 21.1

Subsidiaries of the Registrant

Subsidiary	Jurisdiction
Rackspace Capital Management LP	DE
Macro Capital Management, Inc.	DE
Rackspace US, Inc.	DE
Mosso, LLC	DE
Mailtrust, LLC	DE
Rackspace Limited	UK
Rackspace Headquarters, LLC	TX
Rackspace DAL1DC Management, LLC	TX
Rackspace SATDC Management, LLC	TX
Rackspace IAD1DC, Ltd	TX
Rackspace SATDC, Ltd	TX
Rackspace Benelux Cooperatie U.A.	Netherlands
Rackspace Benelux B.V.	Netherlands
RSUS1, LLC	DE
RSUS2, LLC	DE
Rackspace Asia Limited	Hong Kong
RS International C.V.	Netherlands