SEC FORM 3

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

CINCINNATI BELL INC

(Last)

(First)

(Middle)

221 EAST FOURTH STREET

(Street)

CINCINNATI

45202

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/17/2013

3. Issuer Name and Ticker or Trading Symbol
CyrusOne Inc. [ CONE ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	100	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Operating Partnership Units⁽¹⁾	⁽¹⁾	⁽²⁾	Common Stock	123,688,587⁽³⁾	⁽¹⁾	I	See Footnote⁽⁴⁾

Explanation of Responses:

1. "Operating Partnership Units" are the common units of limited partnership interest in the Issuer's operating partnership, CyrusOne LP, a Maryland limited partnership (the "Operating Partnership"). Operating Partnership Units will be redeemable beginning 12 months from the consummation of the Issuer's initial public offering for cash equal to the then current market value of one share of the Issuer's common stock, or at the election of the Issuer, for shares of the Issuer's common stock on a one-for-one basis.

2. The right to convert Operating Partnership Units into shares of common stock has no expiration date.

3. Does not reflect the approximately 2.8-to-1 unit reverse split expected to be effected immediately prior to the consummation of the Issuer's initial public offering.

4. Data Center Investments Holdco LLC and Data Centers South Holdings LLC are the record holders of 55,038,337 and 68,650,250 Operating Partnership Units, respectively (collectively, the "Controlled OP Units"). Cincinnati Bell Inc. is the sole stockholder of Cincinnati Bell Technology Solutions Inc., which is the sole stockholder of Data Center Investments Inc., which is the sole member of Data Center Investments Holdco LLC. Data Center Investments Inc. is also the sole stockholder of Data Centers South Inc., which is the sole member of Data Centers South Holdings LLC. As a result, Cincinnati Bell Inc. exercises investment discretion and control over the Controlled OP Units.

	/s/ Christopher J. Wilson, Vice President, General Counsel and Secretary	01/17/2013
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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