01
Can you work here
377.8Mbps down
238.7Mbps up
18ms latency
99Score / 100
Measured on this block in Apr-Jun 2026 — the ceiling the hotel's WiFi sits under. Shared WiFi, captive portals and per-device caps only make it slower, never faster.
02
Fixed line vs mobile
| Network | Down | Up | Ping |
|---|---|---|---|
| Fixed broadband — what the WiFi runs on | 377.8 | 238.7 | 18 |
| Mobile — your own SIM | 34.1 | 15.5 | — |
Do not plan on tethering here. Mobile upload (15.5 Mbps) is far below the fixed line (238.7 Mbps) — if the room WiFi fails, your phone is not a working backup for calls.
03
Measured in the room
Nobody has posted a real speedtest from this hotel yet.
04
Outages in Japan
| Started | Ended | Network | Cause |
|---|---|---|---|
| 23 Sep 2026, 00:00 UTC | 23 Sep 2026, 11:00 UTC | JTCL-JP-AS | network problem |
Country- and ISP-level outages, not hotel-level. A national outage takes the hotel with it; the hotel's own router failing will never show here.
05
Nearby, ranked
| Hotel | Verdict | Down | Up |
|---|---|---|---|
| ルートイン上尾 | Call-ready | 303.8 | 270.9 |
| ホテルエルアンドエル大宮店 | Call-ready | 441.8 | 245.6 |
| むさしのグランドホテル | Call-ready | 377.8 | 238.7 |
| Hotel Costa Resort | Call-ready | 721.9 | 520.8 |
| ホテルアランド大宮 | Call-ready | 381.3 | 198.4 |
| HOTEL555 | Call-ready | 485.1 | 290.0 |
| アイホテル上尾 | Call-ready | 200.7 | 128.1 |
| 上尾市バーベキュー場 | Call-ready | 389.2 | 230.7 |