Tsunagu Network Communications

What Tsunagu Network Communications does

Tsunagu Network Communications (株式会社つなぐネットコミュニケーションズ) is a Japanese building-focused internet service provider that delivers full-building (全戸一括) fiber internet, smart-building IoT, and property-management cloud services to condominium developers, management associations, and rental property operators. Founded on January 24, 2001 as a joint venture between Marubeni, Mitsubishi Estate, and Tokyo Tatemono, the company was integrated into the ARTERIA Group in November 2017 and now operates as a wholly-owned subsidiary of ARTERIA Networks Corporation, with headquarters in Tokyo's Otemachi district. It is the long-standing No.1 player in Japan's full-building apartment ISP market per MM Soken's annual survey, serving approximately 1.15 million residential units as of March 2025.

The core technology stack centers on dedicated (non-shared) fiber-to-the-unit connectivity over ARTERIA's proprietary network, supporting up to 10Gbps symmetric service (UCOM光レジデンス and e-mansion, launched June 2022) and a Multi-Gigabit Ethernet upgrade (2.5/5Gbps over existing Cat5e LAN, also June 2022) for retrofitting older buildings. The signature product is Connectix, an SD-WAN-based per-unit priority routing service protected by Patent No. 7044450, allowing individual residents to obtain a dedicated priority lane on shared building infrastructure. Adjacent products include Five.A (small-scale rental housing, June 2020), Mcloud (condominium management association groupware, deployed across ~1,600 buildings and ~200,000 units), HOMETACT (smart home), Tsunatag (eldercare IoT), Wi-Fi plus, security cameras, and つなぐでんき electricity retail. The company also holds ISO 9001 (2016) and ISO/IEC 27001 (originally 2006) certifications.

Commercially, Tsunagu combines a B2B sales-led motion (direct enterprise sales to developers, management companies, and management associations) with a product-led self-serve channel (Portas online portal) for resident-level optional services. Pricing is negotiated per building for the bulk internet contract, while Connectix is sold per unit at 980 JPY/month (post-April 2023, down from 2,200 JPY) with a first-month free trial. Revenue streams are predominantly recurring monthly subscriptions, augmented by one-time installation and ancillary service fees, with disclosed FY2022 revenue of 15.6 billion JPY and a unit base that has grown from ~800,000 (2021) to ~1.15 million (2025).

Name

Tsunagu Network Communications

Legal name

Tsunagu Network Communications Inc. (株式会社つなぐネットコミュニケーションズ)

Website

https://tsunagunet.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

101–250 employees

Short description

Tsunagu Network Communications is a Japanese building-wide ISP serving ~1.15 million residential units as a subsidiary of ARTERIA Networks. The company provides fiber internet, SD-WAN priority routing, and integrated building management services to property developers, management associations, and rental operators.

Ownership category

akta.pro rank

Product category

Residential Internet Services

NAICS

Wired Telecommunications Carriers (517111), Wired and Wireless Telecommunications (except Satellite) (5171)

SIC

Computer Communications Equipment (3576), Radio & Tv Broadcasting & Communications Equipment (3663)

akta.pro primary industry

Home Networking & Connected Home Infrastructure (Wi‑Fi Mesh, Routers, Matter/Thread/Zigbee Bridges) (HSAPAQAG)

Keywords

• Building-wide internet services
• Apartment ISP services
• SD-WAN priority routing
• Property management cloud
• Residential fiber internet

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Building-Wide Internet Service (全戸一括インターネット): Monthly recurring subscription fees paid by the building's management association or developer, covering all residential units. Revenue is recognized per unit per month. Services include UCOM光レジデンス, e-mansion, and Five.A variants across different building sizes and segments.
2. Connectix Premium Option: Optional add-on for individual residential units; billed monthly per unit at 980 JPY/month (post-April 2023). Residents subscribe individually via the Portas platform. First month free trial.
3. Building Cloud/IoT Services: Additional recurring or one-time fees for property management cloud services such as Mcloud management association support, digital signage, smart lock, energy services, EV charging, and related options.
4. Electrical Retail (つなぐでんき): Electricity retail service for common areas of condominiums, sold alongside internet services to reduce building management costs.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

Tsunagu Network Communications provides building-wide (all-unit) high-speed internet and telecommunications services to condominiums and rental apartment buildings in Japan, including dedicated fiber infrastructure, the Connectix SD-WAN-based per-unit priority routing option, multi-gigabit Ethernet upgrades, and bundled cloud/IoT, smart home, energy, EV charging, and property management services for developers, management companies, and management associations.

Differentiator

Problem solved

Functional benefit

Brands

• UCOM光: High-speed internet service for apartment buildings.
• e-mansion
• Connectix
• Five.A
• HOMETACT
• Tsunatag

Products and services

• UCOM光レジデンス (UCOM Hikari Residence)
• e-mansion Building-wide bulk internet service for condominiums aimed at existing/retrofit buildings and management associations seeking to switch providers.
• UCOM光レジデンス Five.A All-unit bulk internet service tailored to small-scale rental collective housing, free standard service for new tenants, including built-in Wi-Fi.
• 10Gbps Full-Unit Internet Service Up to 10Gbps symmetric fiber-to-the-unit internet service sold as UCOM光レジデンス and e-mansion, replacing prior shared-portion 10Gbps offering.
• Multi-Gigabit (2.5Gbps/5Gbps) LAN-Wired Internet Service Upgrade service delivering 2.5Gbps or 5Gbps internet to existing 1Gbps buildings using existing in-building LAN wiring, avoiding new construction.
• Connectix (コネクティクス) SD-WAN-based priority routing option that gives individual residential units a dedicated priority lane over the building's shared internet, avoiding peak-hour congestion.
• Mcloud (マンション管理組合向けグループウェア) Cloud-based groupware for condominium management associations covering meetings, announcements, calendars (with Zoom integration), surveys, facility reservation, and disaster support.
• HOMETACT
• つなタグ (Tsunatag) Shared-LAN-based care DX and condominium DX service connecting residents with care service providers, supporting care scheduling, emergency communication, and DX enablement.
• つなぐでんき (Tsunagu Denki Electricity Retail) Electricity retail service supplied to common areas of condominiums, bundled with internet services to reduce building management costs.
• Wi-Fi plus (建物オプション) Building option service providing in-building Wi-Fi coverage as a supplement to the all-unit bulk internet service.
• 戸建て一括 (Detached House Bulk Fiber) Fiber internet service packaged for detached-house residential developments, analogous to the apartment all-unit bulk service.

Quantifiable outcome

• 12 consecutive years of No.1 market share in Japan for full-building apartment ISP (MM Soken survey)
• +3 more outcomes

Named customers8 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability2 records

Feature4 records

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• J:COM (Jupiter Telecommunications): J:COM is a major Japanese cable TV and broadband provider serving residential MDU and detached households; it is the closest large-scale direct competitor in Japanese residential bundled internet/TV services.
• D.U-NET: D.U-NET is a Japanese apartment-building internet service specialist focused on bulk MDU contracts for both new and existing buildings, directly overlapping with Tsunagu's core product line.
• Hotwire Communications: Hotwire Communications is a US-based fiber-to-the-home provider specializing in MDU and master-planned communities; a useful international parallel for Tsunagu's building-wide internet model.
• Pavlov Media: Pavlov Media is a US-based ISP focused on MDU, off-campus student housing, and bulk residential customers; comparable to Tsunagu in its dedicated building-wide deployment model.

Broad incumbents

• NTT (Nippon Telegraph and Telephone) — FLET'S Hikari: NTT is Japan's dominant fixed-line and fiber operator via FLET'S Hikari; it competes broadly in residential internet and is the wholesale backbone on which many ISPs depend, making it a relevant incumbent benchmark.
• KDDI — au Hikari: KDDI's au Hikari fiber service is a nationwide Japanese residential broadband offering, often bundled with mobile, and competes with Tsunagu for management-association contracts.
• SoftBank — SoftBank Hikari: SoftBank Hikari is a major Japanese fiber broadband service, frequently bundled with SoftBank mobile, competing for residential and MDU customers across Japan.
• Rakuten — Rakuten Hikari: Rakuten Hikari is a Japanese residential fiber service, often deeply discounted via Rakuten Mobile bundling, putting pressure on incumbents and MDU ISPs on price.
• So-net (Sony Network Communications): So-net is a long-established Japanese ISP offering fiber (NURO) and other residential broadband services, competing for consumer and small-business internet contracts.
• BIGLOBE: BIGLOBE is a Japanese ISP providing fiber and mobile services to consumer and SMB customers, relevant as another nationwide broadband alternative.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCE_WdR4WpDqEUdt_oZCGJIg
• LinkedInlinkedin.com/company/tsunagu-network-communications

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Tsunagu Network Communications