diff --git a/nomsdata.txt b/nomsdata.txt
index 4ece5b2..785c825 100644
--- a/nomsdata.txt
+++ b/nomsdata.txt
@@ -13,6 +13,7 @@ a.ads2.msads.net
 a.ads2.msn.com
 a.rad.msn.com
 ac3.msn.com
+activity.windows.com
 ad.doubleclick.net
 adl.windows.com
 adnexus.net