AMSTERDAM--(BUSINESS WIRE)--Interxion Holding N.V. (NYSE: INXN), a leading European provider of cloud- and carrier-neutral colocation data centre services, will release its first quarter 2015 results on Thursday, 7 May 2015, and will host a conference call at 8:30 a.m. ET (1:30 pm BST, 2:30 pm CET) to discuss the results. To participate on this call, U.S. callers may dial toll free 1-866-966-1396; callers outside the U.S. may dial direct +44 (0) 2071 928 000. The conference ID for this call is