EX-4.8





 Exhibit 4.8 

SUPPLEMENTAL INDENTURE NO. 6 

SUPPLEMENTAL INDENTURE NO. 6 (this “Supplemental Indenture”) dated as of December 13, 2019, among RACKSPACE HOSTING,
INC., a Delaware corporation (the “Issuer”), ONICA HOLDINGS LLC, a Delaware limited liability company, ONICA GROUP LLC, a Delaware limited liability company, NETBRAINS, LLC, a Delaware limited liability company and STURDY NETWORKS,
LLC, a Delaware limited liability company (each, a “New Subsidiary Guarantor”), each a subsidiary of the Issuer, and WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association, as trustee under the indenture referred to
below (the “Trustee”). 
 W I T N E S S E T H : 

WHEREAS the Issuer, certain Subsidiary Guarantors and the Trustee have heretofore executed an indenture, dated as of November 3, 2016 (as
amended, supplemented or otherwise modified, the “Indenture”), providing for the issuance of the Issuer’s 8.625% Senior Notes due 2024 (the “Notes”), initially in the aggregate principal amount of
$1,200,000,000; 
 WHEREAS Sections 4.11 and 12.07 of the Indenture provide that under certain circumstances the Issuer is required to
cause each New Subsidiary Guarantor to execute and deliver to the Trustee a supplemental indenture pursuant to which each New Subsidiary Guarantor shall unconditionally guarantee all the Issuer’s Obligations under the Notes and the Indenture
pursuant to a Subsidiary Guarantee on the terms and conditions set forth herein; and 
 WHEREAS pursuant to Section 9.01 of the
Indenture, the Trustee and the Issuer are authorized to execute and deliver this Supplemental Indenture. 
 NOW THEREFORE, in consideration
of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, each New Subsidiary Guarantor, the Issuer and the Trustee mutually covenant and agree for the equal and ratable benefit of the holders of
the Notes as follows: 
 1.    Defined Terms. As used in this Supplemental Indenture, terms defined in the
Indenture or in the preamble or recital hereto are used herein as therein defined, except that the term “holders” in this Supplemental Indenture shall refer to the term “holders” as defined in the Indenture and the
Trustee acting on behalf of and for the benefit of such holders. The words “herein,” “hereof” and “hereby” and other words of similar import used in this Supplemental Indenture refer to this
Supplemental Indenture as a whole and not to any particular Section hereof. 
 2.    Agreement to Guarantee. Each
New Subsidiary Guarantor hereby agrees, jointly and severally with all existing Subsidiary Guarantors (if any), to unconditionally guarantee the Issuer’s Obligations under the Notes and the Indenture on the terms and subject to the conditions
set forth in Article XII of the Indenture and to be bound by all other applicable provisions of the Indenture and the Notes and to perform all of the obligations and agreements of a Subsidiary Guarantor under the Indenture. 

3.    Notices. All notices or other communications to each New Subsidiary Guarantor shall be given as provided in
Section 13.02 of the Indenture. 

  













 4.    Ratification of Indenture; Supplemental Indentures Part of
Indenture. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of
the Indenture for all purposes, and every holder of Notes heretofore or hereafter authenticated and delivered shall be bound hereby. 

5.    Governing Law. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE
LAWS OF THE STATE OF NEW YORK. 
 6.    Trustee Makes No Representation. The Trustee makes no representation
as to the validity or sufficiency of this Supplemental Indenture, or the recitals contained herein. 

7.    Counterparts. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy
shall be an original, but all of them together represent the same agreement. 
 8.    Effect of Headings. The
Section headings herein are for convenience only and shall not affect the construction thereof. 
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left blank.] 












 IN WITNESS WHEREOF, the parties have caused this Supplemental Indenture to be duly executed
as of the date first written above. 
  

			
	RACKSPACE HOSTING, INC.
		
	By:	 	/s/ Dustin Semach
	Name:    	 	Dustin Semach
	Title:	 	Executive Vice President, Chief Financial Officer and Treasurer
	
	ONICA HOLDINGS LLC, as a Subsidiary Guarantor
		
	By:	 	/s/ Christopher J. Rosas
	Name:	 	Christopher J. Rosas
	Title:	 	Vice President & Treasurer
	
	ONICA GROUP LLC, as a Subsidiary Guarantor
		
	By:	 	/s/ Christopher J. Rosas
	Name:	 	Christopher J. Rosas
	Title:	 	Vice President & Treasurer
	
	NETBRAINS, LLC, as a Subsidiary Guarantor
		
	By:	 	/s/ Christopher J. Rosas
	Name:	 	Christopher J. Rosas
	Title:	 	Vice President & Treasurer
	
	STURDY NETWORKS, LLC, as a Subsidiary Guarantor
		
	By:	 	/s/ Christopher J. Rosas
	Name:	 	Christopher J. Rosas
	Title:	 	Vice President & Treasurer


 [Signature Page to Supplemental Indenture No. 6] 












 
			
	WELLS FARGO BANK, NATIONAL ASSOCIATION, not in its individual capacity, but solely as Trustee
		
	By:	 	/s/ Raymond Delli Colli
	Name:    	 	Raymond Delli Colli
	Title:	 	Vice President


 [Signature Page to Supplemental Indenture No. 6]