abtesting.roblox.com - As the name suggests, used for A/B testing. Info here. Looks like it's a CNAME to gold.roblox.com.
gold.roblox.com - Explained above.
robloxlabs.com - Same as above, looks to be related to more A/B testing. More info here.
ads.roblox.com - Responsible for advertising on Roblox, blocked by various other lists. More info here.
c0aws.rbxcdn.com - Used for analytics/telemetry. Confirmed through taking a look at Roblox's FFlag list, can be seen under DFStringAnalyticsNS1BeaconConfig.
c0cfly.rbxcdn.com - Same as above.
client-telemetry.roblox.com - As the name suggests, used for telemetry, blocked by various other lists. Also can be seen in the FFlag list under DFStringTelegrafHTTPTransportUrl.
crashes.rbxinfra.com - Used for crash reporting, can be confirmed through the FFlag list, can be seen under DFStringCrashUploadToBacktraceBaseUrl.
crashes.roblox.com - Same as above, also used for crash reporting.
ecsv2.roblox.com - Used for analytics/telemetry, can be confirmed through looking at the FFlag list, can be seen various times. (i.e. under DFStringRobloxAnalyticsURL & DFStringTelemetryV2Url), also blocked by various other blocklists.
ephemeralcounters.api.roblox.com - Same as above, another variant of the domain.
lms.roblox.com - Another known tracking domain, blocked in various other lists, a source here.
metrics.roblox.com - Another domain clearly used for analytics/telemetry, blocked on various other lists. Info here.
tracing.roblox.com - Yet another domain used for analytics & data collection, also blocked by other lists. Can be seen in the FFlag list under DFStringLightstepHTTPTransportUrlHost.
abtesting.roblox.com
- As the name suggests, used for A/B testing. Info here. Looks like it's a CNAME togold.roblox.com
.gold.roblox.com
- Explained above.robloxlabs.com
- Same as above, looks to be related to more A/B testing. More info here.ads.roblox.com
- Responsible for advertising on Roblox, blocked by various other lists. More info here.c0aws.rbxcdn.com
- Used for analytics/telemetry. Confirmed through taking a look at Roblox's FFlag list, can be seen underDFStringAnalyticsNS1BeaconConfig
.c0cfly.rbxcdn.com
- Same as above.client-telemetry.roblox.com
- As the name suggests, used for telemetry, blocked by various other lists. Also can be seen in the FFlag list underDFStringTelegrafHTTPTransportUrl
.crashes.rbxinfra.com
- Used for crash reporting, can be confirmed through the FFlag list, can be seen underDFStringCrashUploadToBacktraceBaseUrl
.crashes.roblox.com
- Same as above, also used for crash reporting.ecsv2.roblox.com
- Used for analytics/telemetry, can be confirmed through looking at the FFlag list, can be seen various times. (i.e. underDFStringRobloxAnalyticsURL
&DFStringTelemetryV2Url
), also blocked by various other blocklists.ephemeralcounters.api.roblox.com
- Same as above, another variant of the domain.lms.roblox.com
- Another known tracking domain, blocked in various other lists, a source here.metrics.roblox.com
- Another domain clearly used for analytics/telemetry, blocked on various other lists. Info here.tracing.roblox.com
- Yet another domain used for analytics & data collection, also blocked by other lists. Can be seen in the FFlag list underDFStringLightstepHTTPTransportUrlHost
.