Check your DNS
Flush your DNS cache: ipconfig /flushdns on Windows, sudo dscacheutil -flushcache on macOS.
网站 · nicovideo.jp
Niconico 是否宕机?
nicovideo.jp
streaming
JP
正常
Checked 2s ago
4/4 regions returned data
every 5 min · HTTP probe
direct probe, not crowd-reported
各区域结果
US East
正常
893 ms
HTTP 302
US West
正常
899 ms
HTTP 302
Europe
正常
900 ms
HTTP 302
Asia
正常
900 ms
HTTP 302
HTTP 详情
- HTTP status
- 302
- Response time
- 893 ms
- Region consensus
- 4/4 reachable
- 24h success rate
- 100% (1/1 probes)
- 24h latency
- 898–898 ms · 898 ms avg
- Last successful probe
- 2s ago
耗时分解
- DNS lookup
- 867 ms
- TCP connect
- 8 ms
- TLS handshake
- 12 ms
- First byte
- 6 ms
- Total
- 893 ms
网络
- Host
- nicovideo.jp
- Port
- 443
- Transport
- HTTPS
结果解读
Niconico is reachable from all 4 monitoring regions.
If you still can't connect, the outage is on your side: DNS cache, VPN routing, ISP filtering, or a browser-level block. Try a different network or device to confirm.
下一步操作
Try another network
Switch between Wi-Fi and mobile data, or disable your VPN. If it works there, the issue is on your primary network.
Browser reset
Try an incognito window or a different browser — a bad extension or cached error page can masquerade as downtime.
FAQ
Why is Niconico down right now?
Outages typically come from CDN/DNS issues, failed deploys, regional routing problems, or DDoS. We can't see Niconico's internal cause — we only confirm reachability from each monitoring region. If all 4 regions failed, it's a confirmed outage on Niconico's side. If only some failed, the impact is regional.
Is Niconico down for everyone or just me?
Look at the per-region grid above. If every region succeeded, the issue is local to your network — flush DNS, switch networks, or disable your VPN. If two or more regions failed, the outage is on Niconico's side.
How often does isitdown.io re-check Niconico?
Every 5 minutes via background HTTP probes from US East, US West, Europe, and Asia. You can also re-run on demand by reloading — the verdict above reflects the latest probe.
Status badge
Embed a live status badge on your site, README, or status page. Updates automatically — same status-aware SVG the rest of isitdown.io uses.
<a href="https://isitdown.io/website/nicovideo.jp"><img src="https://isitdown.io/badge/nicovideo.jp.svg" alt="Niconico status"></a>
相关 · streaming
方法论
- 探测方式
- We send a GET request to the target URL from each region and time the full response.
- 计为宕机的条件
- Every region fails the request (connect refused, DNS error, timeout, or HTTP 5xx).
- 计为降级的条件
- At least one region succeeds but at least one fails — the outage is partial or regional.
- 细节
- Per-region results include HTTP status code, response time, and best-effort DNS / connect / TLS / first-byte phase timings when the Node HTTP client exposes them.
- 频率
- Every 5 minutes, in parallel across 4 monitoring regions (US East Virginia, US West Oregon, Europe London, Asia Singapore).
- 限速目标
- If a host returns 429 or consistently drops connections from our IPs, we cap retries at 3 and report the last observed status — we do not flood the target to confirm the outage.
- 数据来源
- Direct probes from our monitoring infrastructure. We do not aggregate crowd reports, Twitter mentions, or DownDetector signals — every result on this page is a live network request.