58.11.Z - Publishing of books
58.21.Z - Publishing of video games
58.29.Z - Other software publishing
62.01.Z - Computer programming activities
62.02.Z - Computer consultancy activities
62.03.Z - Computer facilities management activities
62.09.Z - Other information technology and computer service activities
63.11.Z - Data processing, hosting and related activities
63.12.Z - Web portals
63.91.Z - Web search portal activities
63.99.Z - Other information service activities not elsewhere classified
70.21.Z - Public relations and communication activities
70.22.Z - Business and other management consultancy activities
72.19.Z - Other research and experimental development on natural sciences and engineering
73.11.Z - Activities of advertising agencies
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
82.20.Z - Activities of call centres
82.30.Z - Organisation of conventions and trade shows