I got my IP address reported as changed to some Deutsche Telekom IP twice in a few minutes by 154.35.175.225 yesterday
This IP is "Faravahar" according to https://trac.torproject.org/projects/tor/ticket/14487
Jun 09 12:21:50.000 [notice] Our IP Address has changed from 149.18.2.82 to 91.5.121.93; rebuilding descriptor (source: 154.35.175.225). Jun 09 12:21:51.000 [notice] Self-testing indicates your ORPort is reachable from the outside. Excellent. Publishing server descriptor. Jun 09 12:21:54.000 [notice] Performing bandwidth self-test...done. Jun 09 12:22:51.000 [notice] Our IP Address has changed from 91.5.121.93 to 149.18.2.82; rebuilding descriptor (source: 86.59.21.38). Jun 09 12:22:51.000 [notice] Self-testing indicates your ORPort is reachable from the outside. Excellent. Publishing server descriptor. Jun 09 12:22:51.000 [notice] Self-testing indicates your DirPort is reachable from the outside. Excellent. Jun 09 12:23:52.000 [notice] Our IP Address has changed from 149.18.2.82 to 91.5.121.93; rebuilding descriptor (source: 154.35.175.225). Jun 09 12:23:52.000 [notice] Self-testing indicates your ORPort is reachable from the outside. Excellent. Publishing server descriptor. Jun 09 12:24:10.000 [notice] Our IP Address has changed from 91.5.121.93 to 149.18.2.82; rebuilding descriptor (source: 154.35.175.225). Jun 09 12:24:10.000 [notice] Self-testing indicates your ORPort is reachable from the outside. Excellent. Publishing server descriptor. Jun 09 12:25:00.000 [notice] Self-testing indicates your DirPort is reachable from the outside. Excellent.