[General Questions and Answers] Lusty Rugnuts:
Here's my hosts file, which is used exclusively for blocking ads. The script below pushes it to the phone with the resolv.conf file, bluwall_basic.sh, bluwall_google.sh and bluwall_lockdown.sh.

This file must be saved with Unix line-ending, so Notepad isn't going to work. I use TextPad.

What I do is to enable Query Logging in Nebulo, which records each attempt at resolving a domain. Then I export the list to a .csv file to /sdcard, pull it to the computer, and edit the entries via TextPad and LibreOffice Calc to delete duplicates and format everything properly. Once you've got the pattern for formatting it down, it only takes about 15 minutes to do.

127.0.0.1 localhost
::1 ip6-localhost

127.0.0.1 a.algovid.com
::1 a.algovid.com
127.0.0.1 a.imprvdosrv.com
::1 a.imprvdosrv.com
127.0.0.1 a.vertamedia.com
::1 a.vertamedia.com
127.0.0.1 aax-us-east.amazon-adsystem.com
::1 aax-us-east.amazon-adsystem.com
127.0.0.1 ad.360yield.com
::1 ad.360yield.com
127.0.0.1 ad.doubleclick.net
::1 ad.doubleclick.net
127.0.0.1 ads.adelement.com
::1 ads.adelement.com
127.0.0.1 ads.contextweb.com
::1 ads.contextweb.com
127.0.0.1 ads.mopub.com
::1 ads.mopub.com
127.0.0.1 ads.pubmatic.com
::1 ads.pubmatic.com
127.0.0.1 ads.smrtbid.com
::1 ads.smrtbid.com
127.0.0.1 ads12.vertamedia.com
::1 ads12.vertamedia.com
127.0.0.1 ads16.vertamedia.com
::1 ads16.vertamedia.com
127.0.0.1 ads42.vertamedia.com
::1 ads42.vertamedia.com
127.0.0.1 amplitude.com
::1 amplitude.com
127.0.0.1 app-measurement.com
::1 app-measurement.com
127.0.0.1 auction.beardfleet.com
::1 auction.beardfleet.com
127.0.0.1 aux-log.adtelligent.com
::1 aux-log.adtelligent.com
127.0.0.1 aux-log1-sh.vertamedia.com
::1 aux-log1-sh.vertamedia.com
127.0.0.1 aux-log2-sh.vertamedia.com
::1 aux-log2-sh.vertamedia.com
127.0.0.1 bh.contextweb.com
::1 bh.contextweb.com
127.0.0.1 bugly.qq.com
::1 bugly.qq.com
127.0.0.1 c.algovid.com
::1 c.algovid.com
127.0.0.1 c.imprvdosrv.com
::1 c.imprvdosrv.com
127.0.0.1 c.versvideo.com
::1 c.versvideo.com
127.0.0.1 cas.cluep.com
::1 cas.cluep.com
127.0.0.1 cdn.doubleverify.com
::1 cdn.doubleverify.com
127.0.0.1 cdn.simplecast.com
::1 cdn.simplecast.com
127.0.0.1 cdn-ssl.vidible.tv
::1 cdn-ssl.vidible.tv
127.0.0.1 cdn1-27403626.algovid.tv
::1 cdn1-27403626.algovid.tv
127.0.0.1 cdn3.doubleverify.com
::1 cdn3.doubleverify.com
127.0.0.1 cm.g.doubleclick.net
::1 cm.g.doubleclick.net
127.0.0.1 crashlytics.com
::1 crashlytics.com
127.0.0.1 cti.w55c.net
::1 cti.w55c.net
127.0.0.1 doubleclick.net
::1 doubleclick.net
127.0.0.1 doubleclickbygoogle.com
::1 doubleclickbygoogle.com
127.0.0.1 dra.amazon-adsystem.com
::1 dra.amazon-adsystem.com
127.0.0.1 e.algovid.com
::1 e.algovid.com
127.0.0.1 e.crashlytics.com
::1 e.crashlytics.com
127.0.0.1 elroycdn.twit.tv
::1 elroycdn.twit.tv
127.0.0.1 events.streamrail.net
::1 events.streamrail.net
127.0.0.1 evtvpaid.bfmio.com
::1 evtvpaid.bfmio.com
127.0.0.1 googleads.g.doubleclick.net
::1 googleads.g.doubleclick.net
127.0.0.1 google-analytics.com
::1 google-analytics.com
127.0.0.1 gov.aniview.com
::1 gov.aniview.com
127.0.0.1 ib.adnxs.com
::1 ib.adnxs.com
127.0.0.1 ice.360yield.com
::1 ice.360yield.com
127.0.0.1 image6.pubmatic.com
::1 image6.pubmatic.com
127.0.0.1 images.ted.com
::1 images.ted.com
127.0.0.1 ioms.bfmio.com
::1 ioms.bfmio.com
127.0.0.1 js.ad-score.com
::1 js.ad-score.com
127.0.0.1 k.streamrail.com
::1 k.streamrail.com
127.0.0.1 kubernetes_serverc.shoofle.tv
::1 kubernetes_serverc.shoofle.tv
127.0.0.1 kubernetes_serverc693.shoofle.tv
::1 kubernetes_serverc693.shoofle.tv
127.0.0.1 kubernetes_serverc743.shoofle.tv
::1 kubernetes_serverc743.shoofle.tv
127.0.0.1 kubernetes_serverc958.shoofle.tv
::1 kubernetes_serverc958.shoofle.tv
127.0.0.1 mads.amazon-adsystem.com
::1 mads.amazon-adsystem.com
127.0.0.1 mixpanel.com
::1 mixpanel.com
127.0.0.1 m.media-amazon.com
::1 m.media-amazon.com
127.0.0.1 mobile-static.adsafeprotected.com
::1 mobile-static.adsafeprotected.com
127.0.0.1 mobimight-inv-eu.admixer.net
::1 mobimight-inv-eu.admixer.net
127.0.0.1 mopub.com
::1 mopub.com
127.0.0.1 my.mobfox.com
::1 my.mobfox.com
127.0.0.1 openrtb.cootlogix.com
::1 openrtb.cootlogix.com
127.0.0.1 optimized-by.rubiconproject.com
::1 optimized-by.rubiconproject.com
127.0.0.1 p.imprvdosrv.com
::1 p.imprvdosrv.com
127.0.0.1 pagead2.googlesyndication.com
::1 pagead2.googlesyndication.com
127.0.0.1 pe.intentiq.com
::1 pe.intentiq.com
127.0.0.1 pe1.intentiq.com
::1 pe1.intentiq.com
127.0.0.1 pix.adrta.com
::1 pix.adrta.com
127.0.0.1 pixel.adsafeprotected.com
::1 pixel.adsafeprotected.com
127.0.0.1 pixel.advertising.com
::1 pixel.advertising.com
127.0.0.1 player.aniview.com
::1 player.aniview.com
127.0.0.1 presentation-atl1.turn.com
::1 presentation-atl1.turn.com
127.0.0.1 p.versvideo.com
::1 p.versvideo.com
127.0.0.1 reports.crashlytics.com
::1 reports.crashlytics.com
127.0.0.1 s0.2mdn.net
::1 s0.2mdn.net
127.0.0.1 s-80.imprvdosrv.com
::1 s-80.imprvdosrv.com
127.0.0.1 s-98.versvideo.com
::1 s-98.versvideo.com
127.0.0.1 s.adtelligent.com
::1 s.adtelligent.com
127.0.0.1 s.vertamedia.com
::1 s.vertamedia.com
127.0.0.1 secure-assets.rubiconproject.com
::1 secure-assets.rubiconproject.com
127.0.0.1 serve.vdopia.com
::1 serve.vdopia.com
127.0.0.1 serverc.shoofle.tv
::1 serverc.shoofle.tv
127.0.0.1 settings.crashlytics.com
::1 settings.crashlytics.com
127.0.0.1 ssl-static.libsyn.com
::1 ssl-static.libsyn.com
127.0.0.1 ssp.lkqd.net
::1 ssp.lkqd.net
127.0.0.1 ssp.streamrail.net
::1 ssp.streamrail.net
127.0.0.1 static.adsafeprotected.com
::1 static.adsafeprotected.com
127.0.0.1 static.cootlogix.com
::1 static.cootlogix.com
127.0.0.1 static.giantbomb.com
::1 static.giantbomb.com
127.0.0.1 static.shoofle.tv
::1 static.shoofle.tv
127.0.0.1 sync.1rx.io
::1 sync.1rx.io
127.0.0.1 sync.search.spotxchange.com
::1 sync.search.spotxchange.com
127.0.0.1 tpc.googlesyndication.com
::1 tpc.googlesyndication.com
127.0.0.1 tps.doubleverify.com
::1 tps.doubleverify.com
127.0.0.1 track1.aniview.com
::1 track1.aniview.com
127.0.0.1 uswest.bfmio.com
::1 uswest.bfmio.com
127.0.0.1 v-40.algovid.com
::1 v-40.algovid.com
127.0.0.1 v-45.algovid.com
::1 v-45.algovid.com
127.0.0.1 v-47.algovid.com
::1 v-47.algovid.com
127.0.0.1 v-48.algovid.com
::1 v-48.algovid.com
127.0.0.1 v-49.algovid.com
::1 v-49.algovid.com
127.0.0.1 v-55.algovid.com
::1 v-55.algovid.com
127.0.0.1 v.algovid.com
::1 v.algovid.com
127.0.0.1 v.lkqd.net
::1 v.lkqd.net
127.0.0.1 vast.aniview.com
::1 vast.aniview.com
127.0.0.1 vast.vid46.com
::1 vast.vid46.com
127.0.0.1 vast.wolseri.com
::1 vast.wolseri.com
127.0.0.1 vd.vidoplay.com
::1 vd.vidoplay.com
127.0.0.1 vid.pubmatic.com
::1 vid.pubmatic.com
127.0.0.1 vid.springserve.com
::1 vid.springserve.com
127.0.0.1 vpaid.junnya.com
::1 vpaid.junnya.com
127.0.0.1 vpaid.mars.video
::1 vpaid.mars.video
127.0.0.1 vpaid.pubmatic.com
::1 vpaid.pubmatic.com
127.0.0.1 vpaid.pupremium.com
::1 vpaid.pupremium.com
127.0.0.1 vpaid.springserve.net
::1 vpaid.springserve.net
127.0.0.1 www.acendub.com
::1 www.acendub.com
127.0.0.1 www.googletagservices.com
::1 www.googletagservices.com
127.0.0.1 www.routercheck.com
::1 www.routercheck.com
127.0.0.1 www.sericontech.com
::1 www.sericontech.com
127.0.0.1 www.intouch.org
::1 www.intouch.org
127.0.0.1 z.moatads.com
::1 z.moatads.com