Assortment of domains collected from multiple sources. Essentially this list is a compilation of any domains I've actually observed getting blocked, having originated from elsewhere/other lists and been added to my own Little Snitch rules.

list.txt

browser-intake-datadoghq.com
collector.github.com
improving.duckduckgo.com
firebaselogging-pa.googleapis.com
crashlyticsreports-pa.googleapis.com
logs.netflix.com
anonymous-communication.ghostery.net
api.mixpanel.com
variations.brave.com
google-analytics.com
iadsdk.apple.com
beyondwickedmapping.org
w3-reporting.reddit.com
metrics.icloud.com
geo.yahoo.com
statsig.anthropic.com
supportmetrics.apple.com
udc.yahoo.com
securemetrics.apple.com
sessions.bugsnag.com
telemetry.individual.githubcopilot.com
w3-reporting-nel.reddit.com
copilot-telemetry.githubusercontent.com
api2.amplitude.com
ogads-pa.googleapis.com
analytics.yahoo.com
googleadservices.com
cdn.segment.com
cdnads.geeksforgeeks.org
prodregistryv2.org
ogads-pa.clients6.google.com
cloudflareinsights.com
csp.secureserver.net
firebase-settings.crashlytics.com
api.sprig.com
sstats.adobe.com
segment-cdn.producthunt.com
librato-collector.genius.com
referrer.disqus.com
rubiconproject.com
csp-reporting.cloudflare.com
analytics.githubassets.com
do-not-tracker.org
data.msn.com
metrics.kapa.ai
analytics.plasmic.app
amazon-adsystem.com
sponsors.vuejs.org
ads-api.x.com
error-tracking.reddit.com
d.ghostery.com
js-eu1.hs-scripts.com
noa.yahoo.com
online-metrix.net
pub.network
dev.visualwebsiteoptimizer.com
internal-analytics.odoo.com
ads.linkedin.com
doubleclick.net
i.posthog.com
intercom-clicks.com
px.srvcs.tumblr.com
supportxmr.com
evs.sgmt.loom.com
browser-intake-us5-datadoghq.com
srtb.msn.com
uie.data.cbc.ca
analytics.regex101.com
hubspotfeedback.com
popin.cc
telemetry.svc.transifex.net
usemessages.com
arclight.vimeo.com
f.convertkit.com
googletagservices.com
metrics-fe-na1.hubspot.com
secure.statcounter.com
eas.etherscan.com
genesis.malwarebytes.com
js.hubspot.com
stats.wp.com
talkingdata.com
pixel.aws.pfnetwork.net
telemetry.transcend.io
ad-delivery.net
aso1.net
btloader.com
cdn.pendo.io
mainexclkdir.com
ml314.com
pubsrv.devhints.io
scorecardresearch.com
umami.dev
eviltracker.net
incoming-telemetry.thunderbird.net
www.ezojs.com
adnxs.com
adsensecustomsearchads.com
analyze-82dfgsi2.m-w.com
app-analytics-services.com
backtrace.io
browser.events.data.microsoft.com
carbonads.com
cdn.onesignal.com
champagne.futurecdn.net
dotmetrics.net
dpmsrv.com
hs-banner.com
inmobi.com
kidpowers.com
mtga.setapp.com
permutive.com
smetrics.redhat.com
tracking.digitalocean.com
go-mpulse.net
syndicatedsearch.goog
track.hubspot.com
applicationinsights.azure.com
stats.setapp.com