<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2015-11-23</finalEffectivenessDispDate>
        <finalEffectivenessDispTime>14:00:00</finalEffectivenessDispTime>
        <form>S-4</form>
        <filer>
            <cik>0001575810</cik>
            <entityName>CyrusOne LP</entityName>
            <fileNumber>333-207647</fileNumber>
        </filer>
        <filer>
            <cik>0001575815</cik>
            <entityName>CyrusOne Finance Corp.</entityName>
            <fileNumber>333-207647-08</fileNumber>
        </filer>
        <filer>
            <cik>0001553023</cik>
            <entityName>CyrusOne Inc.</entityName>
            <fileNumber>333-207647-07</fileNumber>
        </filer>
        <filer>
            <cik>0001653322</cik>
            <entityName>Cervalis LLC</entityName>
            <fileNumber>333-207647-06</fileNumber>
        </filer>
        <filer>
            <cik>0001653321</cik>
            <entityName>Cervalis Holdings LLC</entityName>
            <fileNumber>333-207647-05</fileNumber>
        </filer>
        <filer>
            <cik>0001575811</cik>
            <entityName>CyrusOne TRS Inc.</entityName>
            <fileNumber>333-207647-04</fileNumber>
        </filer>
        <filer>
            <cik>0001575809</cik>
            <entityName>CyrusOne LLC</entityName>
            <fileNumber>333-207647-03</fileNumber>
        </filer>
        <filer>
            <cik>0001575805</cik>
            <entityName>CyrusOne Foreign Holdings LLC</entityName>
            <fileNumber>333-207647-02</fileNumber>
        </filer>
        <filer>
            <cik>0001575806</cik>
            <entityName>CyrusOne GP</entityName>
            <fileNumber>333-207647-01</fileNumber>
        </filer>
    </effectiveData>
</edgarSubmission>
