Companies with a Health score of at least 4, ordered by Health score.
1&1 Drillisch AG, together with its subsidiaries, operates as a telecommunications provider in Germany.
QSC AG engages in the cloud, Internet of Things (IoT), consulting, telecommunications, and colocation businesses in Germany and internationally.
United Internet AG, through its subsidiaries, operates as an Internet service provider.
Public Joint-Stock Company Ukrtelecom provides fixed line telephony and Internet services primarily in Ukraine.
NFON AG provides cloud private branch exchange (PBX) services in Germany, Austria, Italy, the United Kingdom, and Spain.
ecotel communication ag operates as a telecommunications company in Germany.