Japan
The Netflix ISP Speed Index is a measure of prime time Netflix performance on particular ISPs (internet service providers) around the globe, and not a measure of overall performance for other services/data that may travel across the specific ISP network.
ISP Leaderboard - September 2018
| Rank | ISP | Speed Mbps | Previous Mbps | Rank Change | Type | |
|---|---|---|---|---|---|---|
| 1 | au Hikari (KDDI) | 4.14 | 3.95 | No change |
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| 2 | Softbank - Fiber | 3.86 | 3.77 | No change |
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| 3 | UCOM | 3.66 | 3.55 | No change |
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| 4 | eo Hikari (K-Opticom) | 3.57 | 3.39 | No change |
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| 5 | So-net | 3.42 | 3.33 | No change |
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| 6 | Tokai Communications | 3.40 | 3.29 | No change |
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| 7 | iTSCOM | 3.36 | 3.27 | +1 |
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| 8 | OCN (NTT Com) | 3.35 | 3.26 | +1 |
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| 9 | IIJ | 3.30 | 3.28 | -2 |
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| 10 | J:COM | 3.30 | 3.22 | No change |
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| 11 | Asahi Net | 3.26 | 3.18 | +1 |
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| 12 | VECTANT | 3.19 | 3.21 | -1 |
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| 13 | BIGLOBE | 3.17 | 3.14 | No change |
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| 14 | KDDI Cable/DSL/Wireless | 2.62 | 2.54 | +1 |
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| 15 | NIFTY | 2.54 | 2.68 | -1 |
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| 16 | NTTPC InfoSphere | 2.48 | 2.50 | No change |
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| 17 | Freebit | 2.11 | 2.18 | No change |
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| 18 | Softbank - DSL | 2.00 | 1.98 | No change |
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