73.11.Z - Activities of advertising agencies
63.11.Z - Data processing, hosting and related activities
73.12.A - Intermediation in the sale of time and place on advertising aims in the radio and television
73.12.B - Intermediation in the sale of the place on advertising aims in printed media
73.12.C - Intermediation in the sale of the place on advertising aims in electronic media (internet)
73.12.D - Intermediation in the sale of the place on advertising aims in other media
73.20.Z - Market research and public opinion polling
82.11.Z - Office administrative service activities
82.20.Z - Activities of call centres
82.99.Z - Other business support service activities not elsewhere classified