- Backhaul
- Broadband
- Cloud
- Connectivity
- Core Network
- Customer Premises Equipment
- Dark Fiber
- Enterprise
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Who is TDC?
TDC (TDC Net A/S / Nuuday A/S under TDC Group) is a Danish telecommunications group that provides fixed and mobile connectivity, wholesale network access, and related digital services for enterprise, public sector, and consumer markets.
- Integrated fixed and mobile telecoms group offering broadband, mobile, TV, and voice services across Denmark.
- Owns and operates national fiber and coaxial access networks and mobile infrastructure used by retail brands and wholesale customers (connectivity, network infrastructure).
- Provides enterprise and public sector solutions including data connectivity, Virtual Private Network (VPN), security, and collaboration services (networking, security, unified communications).
- Offers wholesale access and capacity services to other service providers and MVNOs on its networks (wholesale connectivity).
- Delivers cloud-based and managed services around connectivity, communication, and entertainment platforms (managed network and IT services).
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More About TDC
TDC is a telecoms and digital services group headquartered in Denmark that structures its activities around network infrastructure operations and customer-facing service brands. The group operates converged fixed and mobile networks that support broadband, mobile data, voice, and TV services for enterprises, public institutions, and households. Its infrastructure assets include nationwide fiber and coaxial cable networks for fixed access, core IP and transport networks, and radio access networks for mobile services. These assets are used by the group’s own retail operations as well as external wholesale customers.
In enterprise and institutional environments, TDC positions its offerings around secure connectivity and communication. This includes fixed data lines, Multiprotocol Label Switching (MPLS) or IP-based VPN services (enterprise networking), Ethernet and wavelength services for high-capacity sites (connectivity, data transport), and internet access products with Service Level Agreements (SLAs). For multi-site businesses and public agencies, TDC connects branch offices, data centers, and cloud on-ramps, typically integrating routing, firewalls, and managed Customer Premises Equipment (CPE) as part of managed network services.
On the mobile side, TDC provides voice, messaging, and mobile data services (mobile connectivity) running on its own radio and core network infrastructure. This supports standard enterprise mobility as well as machine-to-machine and IoT-type connectivity use cases. Mobile connectivity is often bundled with fixed access and collaboration tools to provide converged communication solutions, with centralized management and billing for corporate accounts.
Security and collaboration offerings System Integration Testing (SIT) on top of these connectivity layers. TDC provides services such as managed firewalls, secure remote access, and network-based security controls (network security), which are integrated into enterprise VPN and internet access products. Collaboration and unified communications services (UCaaS) typically involve hosted telephony, conferencing, and messaging integrated with existing IP networks and, where relevant, with customers’ productivity suites. These services use standard telecom protocols such as Session Initiation Protocol (SIP) for voice and signaling over IP-based transport.
As a wholesale provider, TDC offers access and capacity products to other operators and service providers, including bitstream and dark-fiber style services, mobile network access for MVNOs, and backhaul capacity (wholesale networking). This positions TDC in marketplace categories such as national network operator, wholesale connectivity provider, and enterprise telecom services provider. For directory and taxonomy purposes, TDC maps to solution areas including fixed connectivity, mobile connectivity, enterprise networking, network security, unified communications, and managed network services, with its core role centered on providing and operating network infrastructure and associated digital communication services within Denmark.
Our description of TDC. Updated December 2025.
