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 - March 2018
| Rank | ISP | Speed Mbps | Previous Mbps | Rank Change | Type | |
|---|---|---|---|---|---|---|
| 1 | au Hikari (KDDI) | 4.11 | 4.08 | No change |
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| 2 | Softbank - Fiber | 3.80 | 3.13 | +11 |
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| 3 | UCOM | 3.64 | 3.59 | -1 |
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| 4 | eo Hikari (K-Opticom) | 3.51 | 3.50 | -1 |
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| 5 | IIJ | 3.38 | 3.41 | No change |
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| 6 | Tokai Communications | 3.36 | 3.41 | -2 |
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| 7 | OCN (NTT Com) | 3.34 | 3.33 | -1 |
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| 8 | iTSCOM | 3.33 | 3.27 | +3 |
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| 9 | J:COM | 3.30 | 3.27 | +3 |
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| 10 | Asahi Net | 3.30 | 3.30 | -3 |
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| 11 | So-net | 3.28 | 3.28 | -1 |
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| 12 | BIGLOBE | 3.27 | 3.30 | -4 |
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| 13 | VECTANT | 3.18 | 3.30 | -4 |
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| 14 | NTTPC InfoSphere | 2.63 | 2.69 | +1 |
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| 15 | NIFTY | 2.55 | 2.86 | -1 |
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| 16 | KDDI Cable/DSL/Wireless | 2.50 | 2.51 | No change |
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| 17 | Freebit | 2.47 | 2.43 | +1 |
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| 18 | Softbank - DSL | 2.00 | 2.49 | -1 |
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