It's back (on Psychology Today). This time it's

188.72.245.107



This seems to relate to the Soviet Union (!) and/or Germany.

I notice that all these addresses are part of

OrgName: RIPE Network Coordination Centre
OrgId: RIPE
Address: P.O. Box 10096
City: Amsterdam
StateProv:
PostalCode: 1001EB
Country: NL