There are employees of the Dutch Council for Refugees present in the COL, POL and the Application Centres (AC).
At the Judicial Complex at Schiphol Airport (JCS) where the majority of the border procedures take place, asylum applicants who are detained during their border procedure do have access to (other) NGOs (such as Amnesty International) and UNHCR (by email or by phone). These organisations are able to visit asylum applicants in detention as any other regular visitor, but in practice, this rarely happens. Additionally, an asylum applicant cannot receive visitors for the first ten days, but they are able to visit the Dutch Council for Refugees (VWN) as they are present at JCS. On the one hand, asylum applicants are not always familiar with the organisations and do not always know how to reach them. In practice, hardly any visits take place. On the other hand (representatives of) the organisations do not have the capacity to visit all the asylum applicants who wish to meet the representatives of the NGOs or UNHCR. Detainees also have access to the legal assistance from the Dutch Council for Refugees, and their lawyer.[1]
[1] Note that the information provided in this paragraph stems from the experiences of the Dutch Council for Refugees, working at the JCS.