What Castanet 5G does

Castanet 5G (legal entity: Castanet Corporation) is a privately held broadcast internet infrastructure company founded in 2024 and headquartered in Woodinville, Washington. The company builds a hybrid satellite-terrestrial one-to-all overlay network that delivers content directly to 5G Multicast Broadcast Service (MBS) consumer devices without requiring SIM cards, data caps, or last-mile ISP dependencies. Its core technology combines the ATSC 3.0 broadcast standard with 5G Broadcast via a proprietary gap-based multiplexing approach, backed by an LPTV spectrum consortium of 456 stations (MOUs) targeting 1,200 stations for approximately 95% U.S. population coverage and complemented by the VoDoS wholesale satellite CDN consortium.

Castanet's product portfolio includes the core Castanet 5G Broadcast Internet network, the C5G Interactive Live Sports engagement platform (publicly launched April 2026 at NAB Show in Las Vegas), and service modules for Video on Demand, Live Event Streaming, AI and Generative Media Delivery, and Network Offload for ISPs, CSPs, and MNOs. The company serves a horizontal set of enterprise customers — content owners, OTT platforms, sports leagues, MNOs, ISPs, cloud service providers, and AI companies — through a B2B partnership model rather than direct-to-consumer sales.

The business model is multi-stream and partnership-based: subscription tiers, advertising on FAST channels, pay-per-view, sponsorships, transaction fees (including eCommerce), wholesale CDN services, and shared revenue with partners. Pricing is not publicly disclosed and operates on a shared risk/reward basis where partners bring content and Castanet provides network and technology. The company is founder-controlled, has 1-10 employees, has not disclosed any funding rounds or institutional investors, and remains in a pilot-to-early-commercial stage with its first prototype demonstrated in October 2025 and its first commercial-ready pilot network launched in April 2026.

Name

Castanet 5G

Legal name

Castanet Corporation

Website

https://castanet5g.com

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

1–10 employees

Short description

Castanet 5G is a broadcast internet infrastructure company that delivers content directly to 5G MBS devices via a hybrid ATSC 3.0 and 5G Broadcast overlay network, serving content owners, OTT platforms, sports leagues, MNOs, ISPs, and CSPs through B2B partnerships.

Ownership category

akta.pro rank

Product category

Broadcast Internet Infrastructure / Content Delivery Infrastructure

NAICS

Satellite Telecommunications (517410), Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers (516210), Wired and Wireless Telecommunications Carriers (except Satellite) (51711)

SIC

Computer Communications Equipment (3576)

akta.pro primary industry

Satellite Wholesale Capacity & Backhaul (transponder/HTS capacity, teleport services) (HDAIAEAJ)

akta.pro secondary industries

Multicast Routing Platforms (PIM/IGMP/Multicast VPN) (HDAFABAI), Live TV Streaming (vMVPD/IPTV OTT) (MPACAAAD), Wholesale Access & Last-Mile Leasing (local loops, bitstream, unbundling) (HDAIAEAH)

Keywords

• 5G broadcast internet
• Content delivery infrastructure
• Direct-to-device streaming
• Broadcast CDN services
• Live event streaming

Headquarters

HQ city

Woodinville

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Technology or R&D, Infrastructure, Personnel, Operations, Marketing or Sales

Revenue model

1. Subscription Services: Multiple subscription tiers driven by value differentiation, unlocking mass-market reach alongside premium experiences. Content owners can offer tiered access to content.
2. Advertising (FAST Channels): Free ad-supported streaming TV channels where content owners market ad inventory directly or integrate with ad exchanges. Scales audiences into pure margin.
3. Pay-Per-View: Pay-per-view events converting peak demand from cost liability to high-margin revenue events. Economically viable at massive audiences across fixed and mobile.
4. Sponsorships: Content owners monetize key moments in live sports and entertainment events or subsidize content through branded sponsorships.
5. Transaction Fees: Transactional models where revenue scales with engagement rather than being capped by network economics and friction. Includes integrated eCommerce and merchandise.
6. Wholesale CDN Services: VoDoS wholesale satellite CDN consortium providing infrastructure services to network operators and content distributors.
7. Revenue Sharing with Partners: Shared risk and reward model with content owners and service providers. Revenue is shared based on content delivery and engagement metrics.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Castanet 5G (Castanet Corporation) sells a 5G Broadcast Internet overlay network service that combines ATSC 3.0 terrestrial broadcast, satellite, and 5G MBS direct-to-device delivery to move content to mass audiences without SIM cards, data caps, or last-mile ISP dependency. Its core offerings include wholesale CDN-style broadcast infrastructure, a C5G interactive live sports platform, Video on Demand, live event streaming, AI/generative media delivery, and network offload services sold to MNOs, ISPs, and CSPs.

Product overview

Castanet 5G operates as a 5G Broadcast Internet infrastructure and engagement platform company. The core offering is the Castanet 5G Broadcast Internet—a one-to-all overlay network that delivers content directly to 5G Multicast Broadcast Service (MBS) devices without SIM cards, data caps, or last-mile ISP dependencies. Built on top of this network is the C5G Interactive Live Sports platform, which provides engagement, gamification, and monetization tools. The product suite includes specialized modules for Video on Demand, Live Event Streaming, AI and Generative Media Delivery, and Network Offload Services for ISPs, CSPs, and MNOs. Together, these products enable content owners to reach audiences directly while benefiting from flat delivery costs regardless of audience scale.

Differentiator

Problem solved

Functional benefit

Brands

• C5G Interactive Live Sports: A next-generation direct-to-fan interactive live sports platform leveraging the Castanet 5G Broadcast Internet and engagement platform to create immersive sports media experiences with real-time interaction, gamification, loyalty mechanics, and integrated eCommerce.

Products and services

• Castanet 5G Broadcast Internet

Quantifiable outcome

• High-quality, low-latency streaming independent of unicast congestion
• +4 more outcomes

Named customers2 records

Segments7 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability8 records

Feature7 records

Partnerships

Four partnerships are on record, tiered core.

• Major Market BroadcastingcoreStrategic or Co-development PartnerEarlier Silicon Valley pilot deployment with Major Market Broadcasting. This partnership demonstrated the hybrid ATSC 3.0 and 5G Broadcast network technology in a major market before the commercial pilot launch.
• Sinclair Broadcast GroupcoreStrategic or Co-development PartnerPlanned pilot deployment in Washington, DC as part of Castanet's market trial expansion. Sinclair is one of the largest television broadcasting companies in the US.
• LPTV Station PartnerscoreStrategic or Co-development PartnerCastanet's spectrum consortium includes LPTV (Low Power Television) station owners and operators. 456 stations have signed memoranda of understanding, with plans to reach approximately 1,200 stations for 95% US population coverage.
• VoDoS ConsortiumcoreStrategic or Co-development PartnerVoDoS (Voice over Data over Satellite) wholesale satellite CDN consortium providing satellite-based content delivery infrastructure as part of the hybrid satellite-terrestrial architecture for nationwide deployment.

Scale indicators5 records

Recent moves9 records

Expansion highlights6 records

Broad incumbents

• Sinclair Broadcast Group: Sinclair is both a Castanet pilot partner and one of the largest US TV broadcasters actively deploying ATSC 3.0 (NextGen TV) infrastructure. As a major incumbent in broadcast distribution and a partner exploring Castanet's hybrid 5G model, it is a comparable counterparty and potential competitor in next-gen broadcast data services.
• Akamai Technologies: Akamai is the largest global CDN operator serving the same video streaming, live event, and OTT customers Castanet targets. It is the incumbent Castanet's broadcast model is positioned against for live, VOD, and high-concurrency event delivery.
• Harmonic: Harmonic supplies video infrastructure (encoders, origin servers, CDN, ATSC 3.0 headends) to broadcasters, cable operators, and streaming providers. It overlaps with Castanet in broadcast-grade video delivery and ATSC 3.0 ecosystem participation, addressing the same media and broadcast customer set.
• Cloudflare: Cloudflare operates a globally distributed edge network delivering video, streaming, and security services to OTT and enterprise customers. As a cost-aggressive CDN incumbent with growing streaming ambitions, it is a key competitive reference point for Castanet's wholesale and ISP offload offerings.
• Verizon (Media/Frontier): Verizon operates a major US mobile and fixed wireless network alongside media/CDN assets (including the former EdgeCast platform) and is one of the MNO partners Castanet targets for traffic offload. It is comparable both as a wholesale customer and as a potential competing provider of broadcast-grade 5G delivery.
• Edgio: Edgio (formerly Limelight + Verizon Digital Media Services) provides CDN and edge delivery for live, VOD, and large-scale OTT streaming. It competes for the same live streaming, broadcast, and ISP/MNO offload workloads Castanet is targeting with its hybrid broadcast internet.

Direct peers

• TVU Networks: TVU Networks provides IP-based video broadcasting, 5G live transmission, and cloud-based live production for news, sports, and events. It targets the same low-latency live contribution and distribution workflows that Castanet's 5G Broadcast Internet is designed to serve for live event streaming.
• BitPath: BitPath operates a nationwide ATSC 3.0 broadcast data network using LPTV stations - architecturally the closest comparable to Castanet, delivering one-to-many data over the same broadcast standard Castanet hybridizes with 5G. Both target nationwide broadcast-data delivery over the ATSC 3.0 standard with similar station-consortium models.
• Haivision: Haivision builds video contribution, distribution, and live streaming infrastructure (including 5G contribution and broadcast workflows) for media, sports, and enterprise customers. It addresses the same live video and broadcast-grade delivery use cases Castanet serves, with overlapping customer bases in sports and broadcast.

Emerging players

• Bitmovin: Bitmovin provides cloud-based video encoding, player, and analytics infrastructure for OTT streaming and live events. It serves the same OTT and live-streaming customer segments Castanet targets, with overlapping technology focus on high-quality, low-latency streaming at scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Customer concentration

• Xx.com/Castanet5G
• LinkedInlinkedin.com/company/castanet5g/?viewAsMember=true

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Castanet 5G