Changes to the Tor Exit List Service
We've made some changes to the way we present Tor exit lists. The Tor Exit List service maintains lists of IP addresses used by all exit relays in the Tor network. Service providers may find it useful to know if users are coming from the Tor network, as they may wish to provide their users with an onion service. Tor Project also uses this information to help maintain a healthy network and to perform troubleshooting.
Exit lists are provided through three interfaces: raw measurement results are archived by CollecTor, a text file containing all exit addresses is available for download to query locally, and finally, we provide a DNS exit list service to allow services to perform real-time lookups. The DNS system is described below.
Changes to the DNS-based system
The DNS-based system for looking up whether a client is connecting through Tor has been replaced with a brand-new service featuring a simplified lookup mechanism. The new system is up and running andOperators currently using this need to switch from the old system which will be retired on the 1st of April.
Changes to the bulk exit list
As was the case previously, https://check.torproject.org/torbulkexitlist still provides a bulk list of IP addresses, with a simplified interface - queries of the exit list based on exit policy are no longer permitted.
The full details about the changes can be found in this post to the tor-project mailing list.