Home
Services
Au by KDDI

Au by KDDI au.kddi.com Live · Partial outage

Is Au by KDDI down right now? Live status and outage tracker

Partly. Au by KDDI has problems for some users.

Users are reporting a partial outage: 10 problem reports in the last hour, more than usual.

Reports, last hour: 10
Usual at this hour: ≈ 4
Vs the hour before: −29%

User reports, last 24 hours, one bar per 15 minutes. Dashed line: the usual level. 96 normal · 0 elevated · 0 outage

What you can do Help centre

Updated just now · Data refreshes every 5 minutes

01 · User reports

10 reports in the last hour

From a public outage-reporting feed, counted in 15-minute windows. The verdict above is based on these.

02 · Our check, Frankfurt

Answered in 4,090 ms

Our server loaded au.kddi.com less than an hour ago.

Last 24 hours

Au by KDDI outages and problems

User reports, last 24 hours

124 reports in total, counted in 15-minute windows

In the last hour, 10 problem reports came in for Au by KDDI, against about 4 at this time on a usual day. Over the last 24 hours there were 124 reports. Most recent reports were about mobile internet (55%) and voice calls (18%). There has been no spike in reports since 3 November. These are user reports from Japan, where most people report Au by KDDI problems.

NormalClose to the usual level24 h · 124 reports
ElevatedMore than 1.5 times the usual levelNone in this chart
OutageMore than twice the usual level and far above the day's averageNone in this chart
Usual levelWhat a usual day sees at that timeAbout 4 an hour now

Reports, last hour

29% on the hour before

Uptime, 24 h

100.00%

No outage windows

Last outage

None

In the last 24 hours

Busiest 15 minutes

6 reports, 22 h ago

Au by KDDI status card: Partly. Au by KDDI has problems for some users. User reports over the last 24 hours. — **Share this status**The picture people see when this page is shared: the answer and the last 24 hours of reports.
Image

In the past 24 hours, 124 user reports came in for Au by KDDI. Counting only the 15-minute windows with a spike big enough to count as an outage, that comes to 100.00% uptime for the day.

The busiest 15-minute window had 6 reports, about 22 hours ago. That stays below our outage threshold, so it doesn't count as downtime.

No problems detected in the last 24 hoursReports for Au by KDDI stayed at their usual level the whole time.

This month

Au by KDDI in November 2026

Problem reports in November (since 3 November): 152

Monthly report for November 2026

What went wrong

What people said was wrong in recent problem reports for Au by KDDI.

Mobile Internet55%
Voice calls18%
Mobile Signal18%
Website9%

Share of 11 recent reports that said what was wrong.

World map

Where Au by KDDI problem reports come from

The map shows where recent problem reports for Au by KDDI came from in Japan. Big cities always send the most, so dots in many places point to a widespread problem, and one area far ahead of the rest can mean a regional one.

Outage now
Problems now
Normal

Each dot is a group of recent reports, coloured by how its country is doing now; bigger dots, more reports.

Map outlines: Natural Earth.

Last 30 days

Au by KDDI problem spikes, last 30 days

Since 3 November, Au by KDDI had no outage spikes or periods of elevated reports.

A spike is a sharp rise in problem reports from users, kept exactly as this page showed it at the time. This history starts on 3 November 2026. Monthly reports for all services

Troubleshooting

How to fix Au by KDDI not working

When Au by KDDI itself is having trouble, these steps won't bring it back, but they will rule out anything on your side:

Your browser tries to reach au.kddi.com over your own connection, right now. Nothing is sent to us or stored.

Reload au.kddi.com cleanly
Open au.kddi.com in a private window first, because a stale login cookie can break account pages while other sites still load. In Chrome, choose ⋮ > New Incognito tab; in Safari on iPhone, tap the tabs button, choose Private, then tap +.
Toggle the au line
Turn Airplane Mode on for 10 seconds, then turn it off. On iPhone, use Settings > Airplane Mode; on Android, use Settings > Network & internet > Airplane mode. If you have dual SIM, set the line that uses your au SIM or eSIM for data at Settings > Cellular > Cellular Data on iPhone, or Settings > Network & internet > SIMs on Android.
Refresh My au
Close My au, update the app, then sign in again with your au ID. On Android, clear the app cache at Settings > Apps > My au > Storage & cache > Clear cache; on iPhone, remove and reinstall it from Settings > General > iPhone Storage > My au > Delete App.
Reset au network settings
Use this after the quick checks, because the phone may forget saved Wi-Fi networks and carrier choices. On iPhone, go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. On Pixel Android, go to Settings > System > Reset options > Reset mobile network settings.

While Au by KDDI is down: what to use instead

My au app Use it to check usage, bills, contract details, or account notices when the website will not load but the app still opens.
au website Try the browser version for plan changes and support pages if the app hangs, signs you out, or shows a blank screen.
au shop Visit a store for SIM replacement, handset trouble, or account changes that you cannot finish online.
Another connection Use home Wi-Fi or a second carrier SIM if mobile data is the part failing and you need maps, messaging, or banking.

Busiest times

When people report Au by KDDI problems

The busiest hour for reports about Au by KDDI is 01:00 to 02:00 Central European time, and the busiest day is Wednesday.

By hour of the day

By day of the week

Each bar is the average number of user reports in that hour, or on that day of the week, from 29 days of reports since 5 October 2026. The busiest bar is highlighted. Spikes in reports are left out, so one outage does not set the pattern.

About

What happens when Au by KDDI goes down

Au by KDDI is a Japanese telecom service for mobile plans, phone service, mobile data, and account management through KDDI's au brand. Customers rely on it for calls, SMS, data, and My au account tasks, so an outage can interrupt both the network and basic self service.

Mobile data is often the first thing people notice, with pages hanging, apps timing out, or the phone showing signal while nothing loads. Calls may fail to connect, SMS can arrive late, and voicemail or carrier settings can stop updating when the network side has trouble. My au can also break on its own, so you may be unable to sign in, check usage, pay a bill, or change plan options even while calls still work. Problems are often partial or regional in Japan, because one area, account system, or network function can fail while other parts of the service keep running.

Servers and network

Au by KDDI IP address, servers and network

IPv4 address: 175.129.0.103
IPv6: 2001:268:fa03:500:175:129::103
Network: AS2516 · KDDI CORPORATION, registered in Japan
DNS hosted by: its own name servers (ne.jp)
HTTPS certificate: Issued by GlobalSign nv-sa, valid until 26 Apr 2027 (172 days)
HTTP/3: Not advertised
Our check: Answered in 4,090 ms

Checked from our server in Frankfurt, Germany, less than an hour ago, for au.kddi.com. Visitors elsewhere may see different addresses.

Questions

Au by KDDI FAQ

Is Au by KDDI down right now?

The status at the top of this page shows whether user problem reports for Au by KDDI are above their usual level, counted in 15-minute windows over the last 24 hours. Those reports go to a public outage-reporting service; this site does not monitor the network or collect reports itself. If it looks normal, toggle airplane mode, switch between Wi-Fi and mobile data, restart the phone, and try the app or au ID in a browser before changing account settings.

Why can't I sign in with my au ID in My au?

My au can reject a sign-in when the password is wrong or the one-time code has expired. Pause before another attempt, because repeated failures can trigger a temporary block. If the app loops back to the login screen, try the same au ID in a browser, then reset the password from the help centre at http://www.au.kddi.com/support.

Why does my au phone show signal but mobile data will not load?

Check that mobile data is on and that the SIM or eSIM line is selected. A SIM-free Android phone can show bars while data fails because the APN is wrong for au. Toggle airplane mode once; if nearby au phones have the same problem, the issue may be wider than your handset.

What should I try when My au will not show my bill or data usage?

Sign out and sign back in, because an old au ID session can leave the app stuck on loading. Update the app if only the bill or usage screen fails. Family billing or a contract under another au ID can hide the line you expect to see, so check the phone number tied to the account.

Why will au PAY not charge or pay at a store?

First check whether the app is online through mobile data or Wi-Fi, since barcode screens need a fresh connection. If the code spins or the cashier cannot read it, close the payment screen and open a new code. For charge failures from a card or bank account, follow the message in the app rather than retrying over and over.

Official channels

Contact Au by KDDI support

Tip: Au by KDDI doesn't list a public status page that we know of, so its help centre and the report chart on this page are the best places to check.

For your site

Put the Au by KDDI status badge on your site

Paste one of these into a web page, a blog post or a README. The badge shows the same status as this page, based on user problem reports. Browsers can keep a copy for up to 4 hours. It links back here.

HTML

<a href="https://isitdownrightnow.app/services/au/"><img src="https://isitdownrightnow.app/badge/au.svg" alt="Au by KDDI status" height="20"></a>

Markdown, for README files

[![Au by KDDI status](https://isitdownrightnow.app/badge/au.svg)](https://isitdownrightnow.app/services/au/)

The badge is a plain image: no scripts, no cookies. People who see it on your page load it from our server.

How we track Au by KDDI

The status on this page comes from user-submitted problem reports for Au by KDDI, counted in 15-minute windows over the last 24 hours. Each window is compared with the normal level for Au by KDDI, so a few complaints on a quiet day don't trigger anything, but a sudden jump well above normal does.

When reports climb well above normal, the status here changes to partial outage or major outage and the chart moves with it. Au by KDDI doesn't publish a public status page that we know of, so user reports are often the quickest sign that something is wrong on their side.