Home Reports 2025 Global Japan

Internet Speed Report Japan September 2025

A comprehensive analysis of broadband performance in Japan based on real user speed tests conducted on Bandwidth Place.

Total Tests

87

Avg. Download

256.92Mbps

Avg. Upload

255.13Mbps

Avg. Ping

46.3ms

Top Internet Providers

Provider Avg Speed
BIGLOBE Inc. 135.2 Mbps
Internet Initiative Japan Inc. 178.1 Mbps
OPTAGE Inc. 621.7 Mbps
OPTAGE Inc. 292.4 Mbps
NTT Communications Corporation 208.0 Mbps
Softbank BB Corp. 165.1 Mbps
Packet Exchange Limited 173.3 Mbps
Chubu Telecommunications Company, Inc. 245.4 Mbps
SoftEther 199.0 Mbps
NTT Communications Corporation 200.0 Mbps

Top Devices

Device Share
iPhone 9.2%
Generic Smartphone 5.7%
iPhone 2.3%
Generic Smartphone 2.3%
iPhone 1.1%

Top Browsers

Browser Share
Chrome 28.7%
Chrome 11.5%
Safari 11.5%
Mobile Safari 9.2%
Chrome 9.2%
Safari 5.7%
Chrome Mobile 5.7%
Chrome 3.4%
Chrome Mobile iOS 2.3%
Chrome Mobile 2.3%

Analysis Methodology

The data presented in this report is aggregated directly from real user speed tests performed on the Bandwidth Place platform testing network nodes globally during 2025. We calculate the localized metrics using strict data sanity checks to prevent skewed results from anomalies or extreme outliers.

SEO & Location Routing Structure: Because location data is structurally rigid, caching data dynamically to static hierarchy (Country -> State -> City) provides significant improvements to PageSpeed metrics and Time to First Byte (TTFB). This strategy ensures optimum indexing for search engines processing localized queries.