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 - February 2020
| Rank | ISP | Speed Mbps | Previous Mbps | Rank Change | Type | |
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| 1 | au Hikari (KDDI) | 4.18 | 4.26 | No change |
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| 2 | Softbank - Fiber | 3.93 | 3.98 | No change |
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| 3 | UCOM | 3.92 | 3.64 | +1 |
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| 4 | eo Hikari (K-Opticom) | 3.89 | 3.89 | -1 |
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| 5 | iTSCOM | 3.50 | 3.52 | No change |
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| 6 | J:COM | 3.39 | 3.41 | +3 |
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| 7 | Tokai Communications | 3.38 | 3.47 | -1 |
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| 8 | So-net | 3.36 | 3.43 | -1 |
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| 9 | OCN (NTT Com) | 3.34 | 3.43 | -1 |
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| 10 | Asahi Net | 3.31 | 3.32 | No change |
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| 11 | BIGLOBE | 3.19 | 3.19 | +1 |
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| 12 | IIJ | 3.07 | 3.23 | -1 |
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| 13 | KDDI Cable/DSL/Wireless | 2.94 | 3.02 | +1 |
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| 14 | NIFTY | 2.85 | 3.04 | -1 |
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| 15 | VECTANT | 2.81 | 2.90 | No change |
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| 16 | NTTPC InfoSphere | 2.78 | 2.89 | No change |
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| 17 | Softbank - DSL | 2.70 | 2.71 | No change |
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| 18 | Freebit | 2.47 | 2.53 | No change |
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We are suspending the monthly Netflix ISP Speed Index for now, in light of the recent work we've been doing with governments and ISPs to temporarily reduce strain on telecommunications networks around the world.