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The story
On the morning of September 23, 2026, J:COM’s internet service suffered a major outage. J:COM’s official X account announced and apologized, stating that in addition to the NET connection, calls to its customer support center were also difficult to get through due to the disruption. On 5ch, users reported that even the official website was inaccessible, while others said switching their DNS server to a public DNS (9.9.9.9) restored their connection. At the same time, the thread turned into more than just outage reports, with users pointing out that J:COM has suffered frequent outages in the past and airing complaints about building-wide bulk contracts and aggressive door-to-door sales tactics.
[Notice] J:COM NET internet connectivity is currently unavailable.
In addition, our various support channels and customer center are also difficult to reach due to the impact of this outage.
We sincerely apologize for the great inconvenience this has caused our customers.
Source: x.com / Original post here
What people said
Canceling because you moved is an absurdly complicated process.
Never signing up with them again.
Sounds like a Daiwa Reizoki (commercial freezer maker) unit.
I canceled my regular maintenance contract.
Seriously?
I'm not moving, but the inspection visits are a pain too.
Didn't want the moving-cancellation hassle, so I ended up with an NTT-affiliated ISP instead.
Set it to 9.9.9.9 and it connected right away.
Yep, it's down.
Unbelievable.
au spent so much time dunking on Rakuten Mobile, but I guess this is what their own wired network is like.
Actually more common than you'd think.
Rural areas where TV signals don't reach well, or city apartment buildings with bulk contracts.
After the switch to digital terrestrial broadcasting, the apartment-building pattern is probably more common now.
Sometimes the landlord's in on it too.
Have it fixed by the time I get home.
If it's not fixed, I'm calling them up drunk and complaining nonstop.
Tried calling support this morning just to get outage info, and I couldn't get through at all.
The call even cut off partway through lol
The problem is you can't even get the call to connect in the first place.
Why did it have to be this company of all companies…
Probably because it's cheap. My run-down apartment came with J:COM built in by default too.
Knew something like this might happen, so I keep a Rakuten Mobile router as backup.
Speaking of Kansai bridge girders, it reminds me of those tabloid photos of trash the construction company had stuffed inside the collapsed, snapped expressway girders after the Great Hanshin earthquake.
I wonder if they ever got billed for that.
Hey, you're the person who posted about it on Yahoo! 😨
14,000 yen.
I wonder if anyone remembers how, back in the early days, they'd string cable on power company and NTT utility poles without permission and just run their business.
Looking back now, it's almost a charming, quaint era.
I've heard that in some areas they'd refuse to let NTT's cable through and try to push you into signing up for their own line instead.
Yeah, we did that lol
The joint utility-pole permit process was such a hassle, so we just ignored it.
I'm not with the company anymore though.
He kept saying 'it just broke on its own, I didn't do anything,' so I assumed he must have messed something up and ended up yelling at him.
At least be a little gentler with him…
Over here I wasted a whole morning rebooting the router and messing with my phone settings for nothing.
Their outage announcements are slow too, and the fact that you can only find out what's going on from a forum is just pathetic.
Re: #144
Poor dad lol
Wait, even Koro-suke's on J:COM?! (a pun mashing up the classic '(;゚Д゚)' shocked-face character 'Koro-suke' with 'J:COM')
Ah, you too, Koro-suke?
Background and Key Points
J:COM is an internet service delivered over cable TV lines, and it’s commonly used in areas where terrestrial digital broadcast signals don’t reach well, as well as through bulk contracts at apartment and condo buildings. In this outage, some users reported that switching their DNS server to a public DNS (such as 9.9.9.9) restored their connection — but this is a workaround that only helps when the problem lies in DNS resolution, and it’s easy to mistake it for a fix to the underlying line outage itself, which it is not. The thread went beyond reports of this one-off outage, with users also voicing frustration over past aggressive door-to-door sales and cumbersome cancellation procedures, suggesting the discussion was rooted less in a single technical glitch than in broader distrust of the company’s overall customer service.
*This article is compiled as an excerpt and summary of the 5ch (News Express+) thread “Major Communication Outage Underway at J:COM.”

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