These domain names were collected from 346 days of continuous recording of Windows 10 telemetry traffic. Virtual machine and traffic recording software was configured as explained here. Raw traffic dumps were processed as explained here.

List of http-related domains has 327 entries, sorted in descending order by total number of outgoing HTTP connections initiated by Windows 10 operating system (with default settings and without any third party software). We did not include domains which had less than 3 outgoing HTTP connections.

39704 cdn.content.prod.cms.msn.com.
22043 cdn.appex-rf.msn.com.
18778 tile-service.weather.microsoft.com.
 7594 ams1-ib.adnxs.com.
 7210 ib.adnxs.com.
 7106 tlu.dl.delivery.mp.microsoft.com.
 6871 au.download.windowsupdate.com.
 6614 ssw.live.com.
 5905 fra1-ib.adnxs.com.
 5653 vcdn.adnxs.com.
 4632 7.tlu.dl.delivery.mp.microsoft.com.
 4135 au.b1.download.windowsupdate.com.
 2518 ctldl.windowsupdate.com.
 2434 www.msftconnecttest.com.
 2351 2.tlu.dl.delivery.mp.microsoft.com.
 2220 download.windowsupdate.com.
 2064 secure.adnxs.com.
 1282 img-s-msn-com.akamaized.net.
 1086 cdn.adnxs.com.
 1011 go.microsoft.com.
  917 ocsp.digicert.com.
  857 7.dl.delivery.mp.microsoft.com.
  719 ocsp.msocsp.com.
  696 3.tlu.dl.delivery.mp.microsoft.com.
  671 g.live.com.
  662 dl.delivery.mp.microsoft.com.
  632 g.msn.com.
  487 3.dl.delivery.mp.microsoft.com.
  325 2.dl.delivery.mp.microsoft.com.
  279 m.adnxs.com.
  235 img-prod-cms-rt-microsoft-com.akamaized.net.
  227 acdn.adnxs.com.
  221 cm.g.doubleclick.net.
  219 4.au.download.windowsupdate.com.
  217 adx.adnxs.com.
  215 s2.symcb.com.
  170 www.microsoft.com.
  158 ieonline.microsoft.com.
  137 ocsp.godaddy.com.
  131 7.au.download.windowsupdate.com.
  119 ocsp.comodoca.com.
  110 1C.tlu.dl.delivery.mp.microsoft.com.
  109 emdl.ws.microsoft.com.
  106 cdn.query.prod.cms.msn.com.
  105 pr-bh.ybp.yahoo.com.
   84 wscont.apps.microsoft.com.edgesuite.net.
   77 ocsp.usertrust.com.
   74 tags.bluekai.com.
   72 ocsp.omniroot.com.
   72 dis.criteo.com.
   71 p.rfihub.com.
   69 c.bing.com.
   67 images.taboola.com.
   67 ads.yahoo.com.
   65 s.symcd.com.
   62 sync.mathtag.com.
   62 mscrl.microsoft.com.
   61 s.amazon-adsystem.com.
   60 static-spartan-neu-s-msn-com.akamaized.net.
   59 t.a3cloud.net.
   58 dmd.metaservices.microsoft.com.
   57 pxl.connexity.net.
   57 crl.microsoft.com.
   56 beacon.walmart.com.
   55 pixel.everesttech.net.
   55 img.s-msn.com.
   55 geo-um.btrll.com.
   53 ss.symcd.com.
   50 ocsp2.globalsign.com.
   49 pixel.rubiconproject.com.
   48 www.bing.com.
   48 sr.symcd.com.
   47 sync.search.spotxchange.com.
   47 p.adsymptotic.com.
   47 ocsp.globalsign.com.
   46 pix04.revsci.net.
   45 tele.trafficmanager.net.
   45 mpp.vindicosuite.com.
   45 global.ib-ibi.com.
   45 aa.agkn.com.
   44 t.wayfair.com.
   44 cdp1.public-trust.com.
   43 rp.gwallet.com.
   41 contextual.media.net.
   40 r.turn.com.
   40 image2.pubmatic.com.
   39 us-u.openx.net.
   38 images.outbrain.com.
   38 api.taboola.com.
   37 vassg142.ocsp.omniroot.com.
   37 an.pxl.ace.advertising.com.
   36 match.adsrvr.org.
   36 loadm.exelator.com.
   35 pixel.mathtag.com.
   35 otf.msn.com.
   35 c1.adform.net.
   35 001e1b-1.l.windowsupdate.com.
   34 ih.adscale.de.
   34 adl.windows.com.
   33 fonts.gstatic.com.
   32 bidi-geo.mythings.com.
   31 trc.taboola.com.
   31 tags.tiqcdn.com.
   31 g2.symcb.com.
   31 dsum.casalemedia.com.
   31 crl.entrust.net.
   30 www.farmanager.com.
   29 www.wtp101.com.
   28 prod-video-cms-amp-microsoft-com.akamaized.net.
   28 ads.scorecardresearch.com.
   27 um.simpli.fi.
   27 cm.adgrx.com.
   27 bh.contextweb.com.
   26 crl3.digicert.com.
   25 sync.1rx.io.
   25 platform.twitter.com.
   25 blob.weather.microsoft.com.
   25 0012da-1.l.windowsupdate.com.
   24 s.thebrighttag.com.
   24 ocsp.entrust.net.
   24 g.symcd.com.
   24 dsp.adfarm1.adition.com.
   24 1c.dl.delivery.mp.microsoft.com.
   23 tlg.mookie1.com.
   23 cs.adingo.jp.
   22 pixel.sitescout.com.
   21 sync.ligadx.com.
   21 b.scorecardresearch.com.
   20 usync.nexage.com.
   20 tracking.kdata.fr.
   20 ad.360yield.com.
   19 x.skimresources.com.
   19 www.bizographics.com.
   19 static2.politico.com.
   19 ocsp.trust-provider.com.
   19 ibeu2.mookie1.com.
   19 at.atwola.com.
   19 2.au.download.windowsupdate.com.
   18 ums.adtechus.com.
   18 tapestry.tapad.com.
   18 s1.symcb.com.
   18 px.powerlinks.com.
   18 match.basebanner.com.
   18 adventori.com.
   17 www.nirsoft.net.
   17 1c.tlu.dl.delivery.mp.microsoft.com.
   16 www.windowssearch.com.
   16 uipglob.semasio.net.
   16 track.adform.net.
   16 px.owneriq.net.
   16 prod.oneservice.msn.com.
   16 html5.adsrvr.org.
   16 ebdr3.com.
   16 cdn.spotxcdn.com.
   16 c.msn.com.
   15 pixel.tapad.com.
   14 dpm.demdex.net.
   14 api.gravity.com.
   14 a.mnet-ad.net.
   13 www.msn.com.
   13 tps10207.doubleverify.com.
   13 t.tellapart.com.
   13 static-hp-neu.s-msn.com.
   13 rtb-csync.smartadserver.com.
   13 gp.symcd.com.
   13 g.bing.com.
   13 cdn.taboola.com.
   13 cdn.howto-connect.com.
   13 adadvisor.net.
   12 static-entertainment-neu-s-msn-com.akamaized.net.
   12 rub.pxl.ace.advertising.com.
   12 odr.mookie1.com.
   12 ocsp.ws.symantec.com.
   12 idsync.rlcdn.com.
   12 eus-streaming-video-msn-com.akamaized.net.
   12 ce.lijit.com.
   12 cdn.at.atwola.com.
   11 tj.symcd.com.
   11 sync.go.sonobi.com.
   11 pixel.advertising.com.
   11 o.aolcdn.com.
   11 d.turn.com.
   11 cm.smartstream.tv.
   11 b1sync.zemanta.com.
   10 user-disp.tidaltv.com.
   10 sync.outbrain.com.
   10 ocsp.verisign.com.
   10 gn.symcd.com.
   10 00033c-1.l.windowsupdate.com.
    9 t2.symcb.com.
    9 pixel.s3xified.com.
    9 ocsp.comodoca4.com.
    9 metrics.politico.com.
    9 e.nexac.com.
    9 dt.adsafeprotected.com.
    9 download.microsoft.com.
    9 dis.eu.criteo.com.
    9 crl.globalsign.com.
    9 cms.quantserve.com.
    9 b.grvcdn.com.
    9 ad.yieldmanager.com.
    9 966-khf-533.mktoresp.com.
    8 www.intowindows.com.
    8 widgets.outbrain.com.
    8 visitor.omnitagjs.com.
    8 su.addthis.com.
    8 store-images.s-microsoft.com.
    8 secure-dcr.imrworldwide.com.
    8 s.mnet-ad.net.
    8 rtbcc.fyber.com.
    8 router.infolinks.com.
    8 rma-api.gravity.com.
    8 px.adhigh.net.
    8 ocsp.ssl.com.
    8 ocsp.pki.goog.
    8 image4.pubmatic.com.
    8 idpix.media6degrees.com.
    8 gv.symcd.com.
    8 cdn.whatismyipaddress.com.
    8 blog.dailylifetech.com.
    8 atemda.com.
    8 ap.lijit.com.
    8 adserver-us.adtech.advertising.com.
    8 ad.turn.com.
    8 000d4a-1.l.windowsupdate.com.
    7 tg.symcd.com.
    7 rt.legolas-media.com.
    7 pixel.quantserve.com.
    7 opt-east.media.net.
    7 ocsp.thawte.com.
    7 jsonip.com.
    7 fcs.zedo.com.
    7 delivery.swid.switchads.com.
    7 d.chango.com.
    7 cdn.teads.tv.
    7 cdn.aimg.media.net.
    7 ads.lfstmedia.com.
    7 a248.e.akamai.net.
    6 x.bidswitch.net.
    6 sync3.adsniper.ru.
    6 subca.ocsp-certum.com.
    6 ssum.casalemedia.com.
    6 sr.symcb.com.
    6 spoprod-a.akamaihd.net.
    6 sg.symcd.com.
    6 qsearch.media.net.
    6 qsearch-a.akamaihd.net.
    6 pixelus.alephd.com.
    6 pix.btrll.com.
    6 ocsp.starfieldtech.com.
    6 media.whoishostingthis.com.
    6 load.s3.amazonaws.com.
    6 image6.pubmatic.com.
    6 gj.symcd.com.
    6 g.cwkuki.com.
    6 eu-u.openx.net.
    6 disqus-d.openx.net.
    6 crl4.digicert.com.
    6 cdn.w55c.net.
    6 cdn.optimizely.com.
    6 api.viglink.com.
    6 1C.dl.delivery.mp.microsoft.com.
    6 00059f-1.l.windowsupdate.com.
    5 vap2ams2.lijit.com.
    5 static.adsnative.com.
    5 sf.symcd.com.
    5 rto.microsoft.com.
    5 pm.w55c.net.
    5 pixel.onaudience.com.
    5 pixel-a.sitescout.com.
    5 pca-g3-ocsp.geotrust.com.
    5 match.sharethrough.com.
    5 deliveryengine.synchroscript.adswizz.com.
    5 delivery.swid.switchadhub.com.
    5 ads.pubmatic.com.
    5 9.au.download.windowsupdate.com.
    5 11.au.download.windowsupdate.com.
    4 www.howto-connect.com.
    4 windows.intowindows.netdna-cdn.com.
    4 um2.eqads.com.
    4 t.mookie1.com.
    4 ss.symcb.com.
    4 s.wsj.net.
    4 rtd.tubemogul.com.
    4 pix.impdesk.com.
    4 loadus.exelator.com.
    4 gn.symcb.com.
    4 g1.symcb.com.
    4 edge.quantserve.com.
    4 csm2waycm-atl.netmng.com.
    4 crt.comodoca.com.
    4 crl.verisign.com.
    4 clk.tradedoubler.com.
    4 cdn.viglink.com.
    4 api.bing.com.
    4 aktrack.pubmatic.com.
    4 adserver.adtechus.com.
    4 ads.w55c.net.
    4 ads.msn.com.
    4 admin.brightcove.com.
    4 001503-1.l.windowsupdate.com.
    4 0001e9-1.l.windowsupdate.com.
    3 tags.crwdcntrl.net.
    3 store-images.microsoft.com.
    3 staticxx.facebook.com.
    3 static.chartbeat.com.
    3 secure.livechatinc.com.
    3 sc.iasds01.com.
    3 s2s.prebid.org.
    3 rudy.adsnative.com.
    3 rc.symcd.com.
    3 pre-usermatch.targeting.unrulymedia.com.
    3 pixel.adsafeprotected.com.
    3 penta.a.one.impact-ad.jp.
    3 media.msg.dotomi.com.
    3 d.agkn.com.
    3 cti.w55c.net.
    3 crl.usertrust.com.
    3 crl.godaddy.com.
    3 cdn.doubleverify.com.
    3 casale-match.dotomi.com.
    3 c5.zedo.com.
    3 api-cache.adsnative.com.
    3 a.volvelle.tech.
    3 0014d1-1.l.windowsupdate.com.
    3 001120-1.l.windowsupdate.com.
    3 0008b9-1.l.windowsupdate.com.