Investor Services

Investor Relations
972-350-0060
investorrelations@cyrusone.com

Transfer agent
Computershare Trust Company
P.O. Box 43078
Providence, RI 02940-3078

Telephone inquiries:
1-877-373-6374 (U.S.)
1-781-575-2879 (non U.S.)

Press Information

David Baum

646-428-0620

By overnight delivery:
Computershare
250 Royall Street
Canton, MA 02021

Be sure to include your name, address, phone number, e-mail address and a reference to CyrusOne on all of your correspondence.

Please submit your question using the form below.

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Investors