IOTA Stiftung c/o Nextland Srassburger str.55 10405 Berlin
On google street it doesnt match. I can find strabburger street but it doesnt go to 55. I dont speak german by the way...
The address of the IOTA foundation is Straßburger Straße 55, 10405 Berlin (you can replace ß by ss). That's what the foundation admistration of Berlin (Senatsverwaltung für Justiz, Verbraucherschutz und Antidiskriminierung,
Stiftungsaufsicht - II D 2) told me today. They received the incorrect spelled address and obviously didn't check it before publication.
The foundation administration will correct the address now and ask the IOTA foundation for a telephone number and/or Email (as I complained that it is not possible to contact them).