It comes a week after the three countries launched a campaign with global policing agency Interpol to find the names of twenty two women, whose bodies were discovered between 1976 and 2019.
It is the first time Interpol has gone public with a list seeking information about unidentified bodies.
Police said the women deserve to get their names back.
Police said they were following up on one hundred and twenty two potentially useful tip-offs for the cases in Germany, fifty five in Belgium and fifty one in the Netherlands.
Information they have received so far includes possible names of victims, and potential leads about clothing and jewellery the women were wearing.
