NTT Docomo status
NTT Docomo uptime & performance at a glance
- Current status
- Operational
- Uptime · 24h
- 100%
- Uptime · 7 days
- 100%
- Uptime · 30 days
- 100%
- Response time
- 1,303 ms
- Tracked incidents
- 0
- SSL certificate
- —
Is NTT Docomo down, or is it just you?
Multiple independent check rounds from rimetry's monitoring infrastructure, run seconds apart.
Our checks reached NTT Docomo successfully in every round of the last check cycle.
| Check round | Last check | Success rate (24h) | Avg response |
|---|---|---|---|
| Round 1 | Reachable | 100% | 2,052 ms |
| Round 2 | Reachable | 100% | 1,827 ms |
| Round 3 | Reachable | 100% | 1,487 ms |
| Round 4 | Reachable | 100% | 1,525 ms |
Based on 368 automated checks in the last 24 hours. Each round is an independent pass over the same endpoint, seconds apart — a single failing round is not an outage; repeated failures across rounds are.
What can be affected on NTT Docomo?
These are the main NTT Docomo functions that can experience separate issues.
- BroadbandReboot the router once and check the line status page
- Mobile networkToggle airplane mode to force a fresh network registration
- Calls & SMSTest both a call and an SMS — they can fail separately
- Account & settingsCheck account settings from the website if the app looks wrong
- Mobile appForce-close and reopen the app, then retry on mobile data
This list shows which parts can fail on their own. It does not mean any of them is failing right now — the live status above is the only claim we make about the current state.
Incident timeline
No incidents reported. Everything is green.
NTT Docomo appears stable across all monitored regions. Community reports in the last hour are within normal noise levels.
Monitoring live signals…
No disruptions detected
No regional issues yet
About NTT Docomo
NTT Docomo provides mobile cellular connectivity and internet services across Japan via its 4G and 5G networks and d-account authentication system. Users rely on this infrastructure for mobile data, voice calls, and digital payments through d-払い. When technical issues occur, customers often report drops in signal strength, inability to send SMS, or failures when logging into the official member portal to manage subscriptions. Rimetry monitors these connection points and portal accessibility from global nodes to confirm whether the carrier's digital services are reaching their expected performance targets.
Problems with NTT Docomo can affect broadband, mobile network, calls & sms independently.
NTT Docomo (docomo.ne.jp) is a isps & telecom service monitored continuously by rimetry's automated checks. We probe its public endpoints every 60 seconds in repeated independent rounds to detect outages and latency spikes the moment they happen.
Right now NTT Docomo is reporting as operational across our probes, with an average response time of 1303 ms and 100.00% uptime over the last 24 hours. Most users connecting to docomo.ne.jp are seeing it work normally.
Common causes of disruption for services like NTT Docomo include backend API failures, region-specific routing problems at the CDN or ISP layer, expired TLS certificates, DNS misconfigurations, and capacity spikes during major events. rimetry combines automated probes, vendor status feeds, and verified community reports to give you a single high-confidence answer instead of guessing.
Paste this anywhere — your site, docs, README — and visitors see the live rimetry health for this service.
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Other isps & telecom tools people watch alongside NTT Docomo. See the full category.
What is NTT Docomo?
Japan's largest mobile carrier.
NTT Docomo is part of our ISPs & Telecom category. You can also review current trending outages across the internet.
Common issues
- · No connection at all
- · Slow speeds or packet loss
- · DNS resolution failures
- · Mobile data unavailable in an area
Similar patterns often surface across other isps & telecom providers — cross-check against the global outage map.
Troubleshooting
- · Reboot the router once and check the line status page
- · Toggle airplane mode to force a fresh network registration
- · Test both a call and an SMS — they can fail separately
- · Check account settings from the website if the app looks wrong
- · Power-cycle the router for a full 30 seconds before anything else
- · Test on mobile data — if that works, the fault is on the fixed line
- · Try a public DNS resolver to rule out provider DNS problems
- · Check whether one device or every device is affected
- · Look for scheduled maintenance in the provider's account portal
- · Check NTT Docomo's official social channels
Not sure whether it's you or the service? Run a live speed test, check what your IP looks like from the edge, or watch for regional trouble on the worldwide outage map. For the wider picture, browse recent incidents or filter down to isps & telecom.
FAQ
- Is NTT Docomo down for everyone?
Use the live status above — green means it's likely just you. - How often is the status updated?
Every minute from four global regions. - Is NTT Docomo Broadband down?
Broadband can fail on its own, separately from the rest of NTT Docomo. Compare the live status above with your own test of that specific function. - Where can I see past NTT Docomo incidents?
Every event we've recorded lives in the live incident feed, and older ones are grouped in the monthly incident archive. - What else is broken right now?
See the trending outages page or narrow it to isps & telecom.