J:COM Cable

J:COM Cable

https://www.jcom.co.jp
https://www.linkedin.com/company/jupiter-telecommunications-co.-ltd.

J:COM Cable, also known as JCOM, J:Com, or Jupiter Telecommunications, is a privately owned company headquartered in Japan. Operating as a subsidiary of J:COM Corporation, and also noted as a subsidiary of KDDI, the company was founded in 1995 and employs approximately 15,680 individuals. It reported $2.4 billion in revenue as of 2024, functioning as a tier 1 media tech buyer. The company operates as Japan's largest multiple-system operator (MSO) in the cable television industry, with its primary business focusing on providing bundled services to residential customers. These services include multi-channel cable television ("J:COM TV"), high-speed internet ("J:COM NET"), fixed-line and mobile telephony ("J:COM PHONE" and "J:COM MOBILE"), and utility services such as electricity and gas. Furthermore, J:COM operates a media and entertainment division that invests in and manages 17 channels, including J SPORTS, and produces original content like films and animation through its subsidiaries.

2024 Revenue

Founded

1995

Headcount

15,672

Headquarters

Japan

Primary Segment

Telecoms

Ownership

Privately Owned

Deployments

5

News Summary:

On July 7, 2026, J:Com confirmed that a cyber attack compromised over 2.59 million customer email addresses on a KDDI-developed platform. The company stated the unauthorized access stemmed from an incident KDDI disclosed on June 23, resulting from a vulnerability in third-party software used within KDDI's ISP email platform. Earlier the same day, J:Com established a regional renewable energy procurement model, dividing its electricity demand into Hokkaido, eastern, and western Japan, as part of its strategy to achieve carbon neutrality across operations by the end of the 2030 financial year. This initiative followed a July 6 agreement where Osaka Gas and Daigas Energy signed a Virtual PPA with J:COM to provide long-term environmental value from newly constructed solar power plants to J:COM's bases in the Western Japan region, contributing to decarbonization efforts. Previously, on July 5, J:COM announced plans to transform its business by expanding beyond its traditional cable television services into social infrastructure, leveraging its resources to address community, business, and local government challenges.

Similar Companies

Subscribe for full access to J:COM Cable's profile

J:COM Cable offers 6 products in the media and telecoms services industry. J:COM Cable's product portfolio comprises of consumer electronics, media and TV services and telecoms.

Subscribe for full access to J:COM Cable's products in full detail

J:COM Cable's revenues were over $1B in 2024. Caretta Research has split J:COM Cable's revenue into 6 different product categories, the largest of which is consumer broadband. For full access to J:COM Cable's revenue breakdown subscribe to Caretta Portal.

Subscribe for full access to J:COM Cable's revenue in full detail

Jul

7th

2026

00:16

J:Com confirms 2.6 million email addresses affected by KDDI breach

Japanese cable operator J:Com has provided an update on the cyber attack affecting the KDDI-developed email platform it uses for its consumer and wholesale email services, confirming that email addresses belonging to more than 2.59 million customers were compromised. The operator said the unauthorised access was linked to the same incident disclosed by KDDI on 23 June and resulted from attackers exploiting a vulnerability in third-party software used within KDDI's ISP email platform.

Jul

7th

2026

00:02

J:Com establishes regional renewable energy procurement model

Japanese cable operator J:Com has established a regional renewable energy procurement model as part of its plan to achieve carbon neutrality across its operations by the end of the 2030 financial year. The operator said the model divides its electricity demand into three regions – Hokkaido, eastern Japan and western Japan – and combines different procurement methods and regional energy partners to match the characteristics of its network infrastructure and local electricity demand.

Jul

6th

2026

08:20

Osaka Gas signs solar VPPA with telecom JCOM in Japan

&version= &loaderVersion= "]},"children":["$","$L16",null,{"children":["$","$L17",null,{"children":["$L18",["$","$L19",null,{"children":["$","$Lb",null,{"parallelRouterKey":"children","segmentPath":["children"],"error":"$undefined","errorStyles":"$undefined","errorScripts":"$undefined","template":["$","$Le",null,{}],"templateStyles":"$undefined","templateScripts":"$undefined","notFound":"$L1a","notFoundStyles":[],"styles":null}]}]]}]}]}]}]]}] "])

Jul

6th

2026

01:00

Osaka Gas and Daigas Energy to Supply Environmental Value through Virtual PPA

Osaka Gas and Daigas Energy have entered into a Virtual PPA agreement with JCOM to provide long-term environmental value in the Western Japan region. The agreement will supply electricity from solar power plants with 'additionality' to JCOM's bases, contributing to decarbonization and Japan's overall decarbonization efforts. The Daigas Group will use a virtual PPA scheme to supply environmental value generated by newly constructed solar power plants, leveraging its strengths in renewable energy development and operation.

Jul

5th

2026

19:57

New Offerings, ESG, B2B Tag, New Offerings

JCOM expands from cable to social infrastructure

JCOM Co. Ltd. aims to transform its business by moving beyond its original cable television operations in a nearly saturated market and expanding into social infrastructure services that use its resources to help address issues in communities, businesses and local governments.

The Japan Times

Jun

29th

2026

01:00

KDDI Email System Breach Exposes Up to 14.2 Million Credentials Across Six Japanese ISPs

Executive Summary On June 17, 2026, KDDI Corporation, one of Japan’s largest telecommunications providers, detected unauthorized access to its email system, which is shared with five other Japanese internet service providers (ISPs). The breach was caused by exploitation of a vulnerability in unnamed third-party software used in the email system.

Jun

10th

2026

01:35

J:Com to air more than 300 high school baseball games

Japanese cable operator J:Com will broadcast more than 300 games from 15 regional qualifying tournaments for Japan's National High School Baseball Championship across its regional channels this summer. The operator said coverage will begin on 4 July across its regional J Channel networks and will include tournaments in South Hokkaido, Miyagi, Ibaraki, Chiba, Saitama, East and West Tokyo, Kanagawa, Kyoto, Osaka, Hyogo, Yamaguchi, Fukuoka, Kumamoto and Oita.

Feb

2nd

2026

01:14

Notice of Personnel Changes | News Release | JCOM Co., Ltd. | J:COM

[Translated] The browser you are using currently has JavaScript disabled.Please enable JavaScript settings because the page may not display correctly.To view PDF format files, you need Adobe® Acrobat Reader, which is provided free of charge by Adobe Systems.If you do not have Adobe Reader, please click the button on the left to download it.*The linked site is operated by Adobe Systems.

Jan

29th

2026

01:06

Notice of Organizational Reformation and Personnel Changes | News Release | JCOM Co., Ltd. | J:COM

[Translated] Notice of Organizational Reformation and Personnel ChangesJanuary 29, 2026JCOM Co., Ltd.JCOM Co., Ltd. (J:COM Headquarters: Chiyoda-ku, Tokyo, President and Representative Director: Yoichi Iwaki) hereby announces that it will implement the following organizational reformation and personnel changes.1.

Jan

22nd

2026

01:13

Emerging Tech, B2B Tag

~Let's witness everything about the challenge.~ "Milano Cortina 2026 Paralympic Games" Broadcast and Free Distribution on "J Tele" and "J SPORTS"*1

[Translated] ~Let's witness everything about the challenge.~"Milano Cortina 2026 Paralympic Games"Broadcast and Free Distribution on "J Tele" and "J SPORTS"*1January 22, 2026JCOM Co., Ltd.J Sports CorporationJCOM Co., Ltd. (J:COM, headquarters: Chiyoda-ku, Tokyo, President and Representative Director: Yoichi Iwaki) and J Sports Corporation (J SPORTS, headquarters: Koto-ku, Tokyo, President and Representative Director: Ichiro Hase) will broadcast and simultaneously distribute the "Milano Cortina 2026 Paralympic Winter Games" held from March 6 (Fri) to March 15 (Sun), 2026.

Jan

5th

2026

01:03

Emerging Tech, ESG, B2B Tag

2026 New Year's Address

[Translated] January 5, 2026JCOM Co., Ltd.(This document is an excerpt from the New Year's address to employees by Yoichi Iwaki, President and Representative Director of J:COM.)Happy New Year.

Dec

19th

2025

13:07

“Fukuaji Travel Guide - Osaka Edition” Airing on “J:COM Channel” January 2nd (Fri) ~“Fukuaji Travel” Guided by Kundo Koyama and High Heel Momoko~

[Translated] “Fukuaji Travel Guide - Osaka Edition”Airing on “J:COM Channel” January 2nd (Fri)~“Fukuaji Travel” Guided by Kundo Koyama and High Heel Momoko~December 19, 2025JCOM Co., Ltd.JCOM Co., Ltd. (J:COM, Headquarters: Chiyoda-ku, Tokyo, President: Yoichi Iwaki) will broadcast “Fukuaji Travel Guide - Osaka Edition” on the “J:COM Channel” from 8:00 PM on January 2, 2026 (Fri).

Examples of J:COM Cable's suppliers include Google, Amdocs and Vistance Networks.

Example Customers

Subscribe for full access to J:COM Cable's profile

Example Suppliers

Subscribe for full access to J:COM Cable's profile

J:COM Cable currently holds 2 broadcasting rights for sports competitions including golf and multi-sport.

Example Sports Rights Suppliers

Subscribe for full access to J:COM Cable's profile

Analyst insight reports

Media technology marketing trends 2022: Communicating company culture

Generative AI in media tech

Behind the news - emerging trends in news production technology and workflows

Post-NAB review 2026: key trends

Subscribe to access all analyst insight reports