42.22.Z - Construction of utility projects for electricity and telecommunications
61.10.A - Internet traffic exchange services
95.10.Z - Repair and maintenance of computers and communication equipment
74.99.Z - All other professional, scientific and technical activities n.e.c.
72.10.Z - Research and experimental development on natural sciences and engineering
71.20.C - Other technical research and analyses
71.12.B - Other activities in the field of engineering and related technical consulting
63.92.Z - Other information service activities
63.10.D - Other services related to computing infrastructure, data processing, website management (hosting), and related activities
62.90.Z - Other information technology and computer service activities
62.20.B - Other activities related to it consulting and it asset management
62.20.A - Cybersecurity activities
62.10.B - Other programming activities
61.90.B - Other telecommunications activities not elsewhere classified
61.90.A - Internet communication services
61.20.Z - Telecommunication reselling activities and intermediation service activities for telecommunication
61.10.B - Other activities in wired, wireless, and satellite telecommunications
25.11.Z - Manufacture of metal structures and parts of structures
47.92.Z - Intermediation service activities for specialised retail sale
47.91.Z - Intermediation service activities for non-specialised retail sale
47.40.Z - Retail sale of information and communication equipment
47.12.Z - Other non-specialised retail sale
46.50.Z - Wholesale of information and communication equipment
46.43.Z - Wholesale of electrical household appliances
43.21.Z - Electrical installation
33.20.Z - Installation of industrial machinery and equipment
33.14.Z - Repair and maintenance of electrical equipment
33.13.Z - Repair and maintenance of electronic and optical equipment
27.31.Z - Manufacture of fibre optic cables
26.30.Z - Manufacture of communication equipment
26.20.Z - Manufacture of computers and peripheral equipment
26.12.Z - Manufacture of loaded electronic boards
