Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26427332_17 (federal_state VARCHAR, city VARCHAR)

### Question ###
for how many federal states is the city of lahnstein listed in the ranking?

### Accurate SQL ###

SELECT COUNT(federal_state) FROM table_26427332_17 WHERE city = "Lahnstein"