UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                                (Amendment No.1)

                                  CyrusOne Inc
                         ------------------------------
                                (Name of Issuer)

                                  Common Stock
                               -----------------
                         (Title of Class of Securities)

                                    23283R100
                                    ---------
                                 (CUSIP Number)


             Date of Event which Requires Filing of this Statement

                               September 30, 2018
                              --------------------

Check the appropriate box to designate the rule pursuant to which the Schedule
is filed:

[x]     Rule 13d-1(b)
[ ]     Rule 13d-1(c)
[ ]     Rule 13d-1(d)
* The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any  subsequent  amendment  containing  information  which
would  alter the disclosures provided in prior coverage.

The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of the Securities  Exchange Act of 1934
("Act") or otherwise subject to the liabilities of that section of the Act but
shall be subject to all other provisions of the Act (however, see the Notes).

SEC 1745 (12-02)




Schedule 13G (continued)

CUSIP No. 23283R100
-------------------------------------------------------------------------------
   1   NAME OF REPORTING PERSON
       S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

       Cohen & Steers, Inc. 14-1904657
-------------------------------------------------------------------------------
   2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                             (a)  [ ]
                                                             (b)  [x]
-------------------------------------------------------------------------------
   3   SEC USE ONLY


-------------------------------------------------------------------------------
   4   CITIZENSHIP OR PLACE OF ORGANIZATION

       Delaware
-------------------------------------------------------------------------------
   NUMBER OF      5    SOLE VOTING POWER
     SHARES            7,828,708
  BENEFICIALLY    -------------------------------------------------------------
    OWNED BY      6    SHARED VOTING POWER
      EACH             0
   REPORTING      -------------------------------------------------------------
     PERSON       7    SOLE DISPOSITIVE POWER
      WITH             11,463,591
                  -------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER
                       0
-------------------------------------------------------------------------------
   9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       11,463,591
-------------------------------------------------------------------------------
  10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

       [ ]
-------------------------------------------------------------------------------
  11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       10.96%
-------------------------------------------------------------------------------
  12   TYPE OF REPORTING PERSON*

       HC, CO
-------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT



Schedule 13G (continued)

CUSIP No. 23283R100
-------------------------------------------------------------------------------
   1   NAME OF REPORTING PERSON
       S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

       Cohen & Steers Capital Management, Inc.     13-3353336
-------------------------------------------------------------------------------
   2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                             (a)  [ ]
                                                             (b)  [x]
-------------------------------------------------------------------------------
   3   SEC USE ONLY


-------------------------------------------------------------------------------
   4   CITIZENSHIP OR PLACE OF ORGANIZATION

       New York
-------------------------------------------------------------------------------
   NUMBER OF      5    SOLE VOTING POWER
     SHARES            7,778,029
  BENEFICIALLY    -------------------------------------------------------------
    OWNED BY      6    SHARED VOTING POWER
      EACH             0
   REPORTING      -------------------------------------------------------------
     PERSON       7    SOLE DISPOSITIVE POWER
      WITH             11,296,615
                  -------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER
                       0
-------------------------------------------------------------------------------
   9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       11,296,615
 ------------------------------------------------------------------------------
  10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

       [ ]
-------------------------------------------------------------------------------
  11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       10.80%
-------------------------------------------------------------------------------
  12   TYPE OF REPORTING PERSON*

       IA, CO
-------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT



Schedule 13G (continued)

CUSIP No. 23283R100
-------------------------------------------------------------------------------
1)  NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (entities only)

    Cohen & Steers UK Limited
-------------------------------------------------------------------------------
2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                          (a) [ ]
                                                          (b) [x]
-------------------------------------------------------------------------------
3)  SEC USE ONLY


-------------------------------------------------------------------------------
4)  CITIZENSHIP OR PLACE OF ORGANIZATION

    United Kingdom
-------------------------------------------------------------------------------
    NUMBER        5)   SOLE VOTING POWER
    OF                 50,679
    SHARES        -------------------------------------------------------------
    BENEFICIALLY  6)   SHARED VOTING POWER
    OWNED BY           0
    EACH          -------------------------------------------------------------
    REPORTING     7)   SOLE DISPOSITIVE POWER
    PERSON             166,976
    WITH          -------------------------------------------------------------
                  8)   SHARED DISPOSITIVE POWER
                       0
-------------------------------------------------------------------------------
9)  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    166,976
-------------------------------------------------------------------------------
10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ]

-------------------------------------------------------------------------------
11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    0.16%
-------------------------------------------------------------------------------
12) TYPE OF REPORTING PERSON

    IA, CO
-------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!



Schedule 13G (continued)


Item 1.

        (a)  Name of Issuer:

             CyrusOne Inc


        (b)  Address of Issuer's Principal Executive Offices:

             2101 Cedar Springs Road, Suite 900
             Dallas, Texas 75201


Item 2.

        (a)  Name of Persons Filing:
               Cohen & Steers, Inc.
               Cohen & Steers Capital Management, Inc.
               Cohen & Steers UK Ltd
        (b)  Address of Principal Business Office for Cohen & Steers, Inc.
             and Cohen & Steers Capital Management, Inc. is:
               280 Park Avenue
               10th Floor
               New York, NY 10017

            The principal address for Cohen & Steers UK Ltd. is:
		50 Pall Mall 7th Floor
		London, United Kingdom SW1Y 5JH

        (c)  Citizenship:
               Cohen & Steers, Inc: Delaware corporation
               Cohen & Steers Capital Management, Inc: New York corporation
               Cohen & Steers UK Ltd: United Kingdom Private Limited Company
        (d)  Title of Class Securities:
               Commmon
        (e)  CUSIP Number:
               23283R100


Item 3.     If this statement is filed pursuant to Rule 13d-l(b), or
            13d-2(b), check whether the person filing is a

            (a)  [ ]  Broker or Dealer registered under Section 15 of the Act

            (b)  [ ]  Bank as defined in Section 3(a)(6) of the Act

            (c)  [ ]  Insurance Company as defined in section 3(a)(19) of
                      the Act

            (d)  [ ]  Investment Company registered under Section 8 of the
                      Investment Company Act

            (e)  [x]  An investment advisor in accordance with Section
                      240.13d-1(b)(1)(ii)(E)

            (f)  [ ]  An employee benefit plan or endowment fund in accordance
                      with 240.13d-1(b)(1)(ii)(F)

            (g)  [x]  A parent holding company or control person in accordance
                      with Section 240.13d-l(b)(1)(ii)(G)

            (h)  [ ]  A savings association as defined in Section 3(b) of the
                      Federal Deposit Insurance Act (12 U.S.C. 1813)

            (i)  [ ]  A church plan that is excluded from the definition of an
                      investment company under section 3(c)(14) of the
                      Investment Company Act of 1940 (15U.S.C. 80a-3)

            (j)  [ ]  Group, in accordance with Section 240.13d-1(b)(l)(ii)(J)



Item 4.    OWNERSHIP:

         (a) Amount Beneficially Owned as of September 30, 2018:

               See row 9 on cover sheet

         (b) Percent of Class:

               See row 11 on cover sheet


          (c) Number of shares as to which such person has:
                (i)   sole power to vote or direct the vote:
                         See row 5 on cover sheet

                (ii)  shared power to vote or direct the vote:
                         See row 6 on cover sheet

                (iii) sole power to dispose or to direct
                      the disposition of:
                          See row 7 on cover sheet

                (iv)  shared power to dispose or direct
                      the disposition of:
                          See row 8 on cover sheet


Item 5.  OWNERSHIP OF 5% OR LESS OF A CLASS
         NO

Item 6.  OWNERSHIP OF MORE THAN 5% ON BEHALF OF ANOTHER PERSON
         N/A

Item 7.  IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH
         ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT
         HOLDING COMPANY

         Cohen & Steers, Inc. holds a 100% interest in Cohen & Steers Capital
         Management, Inc., an investment advisor registered under Section 203
         of the Investment Advisers Act.

Item 8.  IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

         Cohen & Steers, Inc holds a 100% interest in Cohen & Steers Capital
         Management, Inc., an investment advisor registered under Section 203
         of the Investment Advisers Act.

Item 9   NOTICE OF DISSOLUTION OF GROUP:
         Not Applicable


Item 10. Certification

By signing below I certify  that,  to the best of my knowledge  and belief,
the securities  referred to above were  acquired and are held in the ordinary
course of business and were not  acquired and are not held for the purpose of
or with the effect of changing or influencing the  control of the issuer of
such securities and were not acquired and are not held in connection with or as
a participant in any transaction  having that purposes or effect.

Signature

After  reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true,
complete and correct.

Date:  October 10, 2018

                        Cohen & Steers, Inc.
                        Cohen & Steers Capital Management, Inc.

                        By:

                        /s/ Lisa Phelan
                        ____________________________________________
                            Signature


                            Lisa Phelan, Executive Vice President,
                            Chief Compliance Officer
                        ____________________________________________
                            Name and Title



                        Cohen & Steers UK Limited
                        By:

                        /s/ Heather Kaden
                        ____________________________________________
                            Signature


                            Heather Kaden
                            Compliance Officer
                        ____________________________________________
                            Name and Title






                    JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act
of 1934, as amended, the undersigned hereby agree to the joint filing with all
other Reporting Persons (as such term is defined in the Schedule 13G referred
to below) on behalf of each of them of a Statement on Schedule 13G including
amendments thereto with respect to the Common Shares of CyrusOne Inc and that
this  Agreement may be included as an Exhibit to such joint filing. This
Agreement may be executed in any number of counterparts,all of which together
shall constitute one and the same instrument.

         IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as
of October 10, 2018.


                        Cohen & Steers, Inc.
                        Cohen & Steers Capital Management, Inc.

                        By:

                        /s/ Lisa Phelan
                        ____________________________________________
                            Signature


                            Lisa Phelan, Executive Vice President,
                            Chief Compliance Officer
                        ____________________________________________
                            Name and Title



                        Cohen & Steers UK Limited
                        By:

                        /s/ Heather Kaden
                        ____________________________________________
                            Signature


                            Heather Kaden
                            Compliance Officer
                        ____________________________________________
                            Name and Title