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- Fiber
- Fiber-to-the-Home
- Internet
- Internet Protocol
- Internet Service Providers
- Local Area Network
- Multitenant
- Network Operator
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- Service Level Agreements
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- Software-Defined Wide Area Network
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Who is Cooolbox?
Cooolbox is a Bulgarian telecommunications operator providing fixed broadband, voice, and TV services over its own fiber infrastructure for residential and business customers.
- Fiber-to-the-Home (FTTH) and fiber-to-the-business internet access services (connectivity).
- IP-based fixed telephony services for residential and corporate users (voice).
- Digital and interactive television offerings delivered over IP networks (IPTV / TV services).
- Enterprise connectivity solutions, including high-bandwidth links and tailored service-level options (enterprise networking).
- Operation of proprietary fiber-optic network infrastructure in urban areas of Bulgaria (network infrastructure).
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More About Cooolbox
Cooolbox operates as a fixed network telecommunications provider in Bulgaria, focusing on fiber-optic connectivity for households, small and medium-sized businesses, and larger organizations. The company builds and manages its own last-mile and metro fiber infrastructure, offering broadband internet, IP-based telephony, and digital TV services bundled or as standalone options. Its positioning targets users that require stable, low-latency connections, such as enterprise offices, public institutions, and high-usage residential customers.
The core of Cooolbox’s portfolio centers on high-speed internet access (connectivity), delivered over FTTH and fiber-to-the-building (FTTB) architectures. These deployments generally use Ethernet over fiber and standard IP-based routing to provide symmetrical or high-download bandwidth tiers. The company’s fiber access model supports use cases such as site-to-site VPNs, remote work connectivity, cloud service access, and Wide Area Network (WAN) connectivity for branch locations. For enterprise environments, this infrastructure can integrate with customer-operated firewalls, Software-Defined Wide Area Network (SD-WAN) appliances, and hybrid network topologies.
Cooolbox also provides fixed voice services (voice), typically over Voice Over Internet Protocol (VoIP) and SIP-based protocols. By using IP telephony, the company can terminate calls over its own backbone and interconnect with other national and international operators. For businesses, voice offerings can interface with PBX systems or IP phones, enabling centralized call handling, direct inward dialing, and multi-site voice deployments. The service model fits organizations seeking converged data and voice services over a single access line with Quality of Service (QoS) policies enforced at the network edge.
On the TV side, Cooolbox delivers digital and interactive television (IPTV / TV services), using multicast and unicast streaming over IP networks. Set-top boxes or compatible client devices receive linear TV channels, time-shifted viewing, and other interactive functions where available. For multi-tenant buildings and hospitality or institutional environments, the IPTV framework can be used to distribute channels across internal Local Area Network (LAN) segments while relying on Cooolbox for headend and backbone capacity.
From a technology stack perspective, Cooolbox’s services align with standard telecom and internet service provider practices: fiber access, Ethernet aggregation, IP/MPLS core networking, and session-based control for voice and TV services. In enterprise catalogs and vendor directories, Cooolbox fits into categories such as broadband and dedicated internet access (connectivity), VoIP and Session Initiation Protocol (SIP) trunking (voice), and IPTV / managed TV distribution (media delivery). Its ownership of physical fiber assets and focus on fixed services positions the company primarily as a regional ISP and telecom operator for organizations that prefer local network presence, direct peering within Bulgaria, and contractual Service Level Agreements (SLAs) based on an operator-run infrastructure.
Our description of Cooolbox. Updated February 2026.