Interxion Holding N.V. (NYSE: INXN), a leading European provider of colocation data centre services, will release its fourth quarter 2011 results on Wednesday, 29 February 2012, and will host a conference call at 8:30 a.m. ET (1:30 pm GMT, 2:30 pm CET) to discuss the results.

To participate on this call, U.S. callers may dial toll free 1-866-966-9439; callers outside the U.S. may dial direct +44 (0) 1452 555 566. The conference ID for this call is 49634657. This event also will be webcast live over the Internet in listen-only mode at investors.interxion.com.

A replay of this call will be available shortly after the call concludes and will be available until 6 March 2011. To access the replay, U.S. callers may dial toll free 1866 247 4222; callers outside the U.S. may dial direct +44 (0) 1452 55 00 00. The replay access number is 49634657#.