February 2, 2022 Aggregation and Provisional Calculation of Internet Traffic in Japan

To grasp the actual state of fixed broadband Internet traffic (communications volume) in Japan, the Ministry of Internal Affairs and Communications (MIC) aggregated and estimated the amount of traffic as of November 2021 and summarized the results in PDF as attached. MIC made this provisional calculation under the cooperation of nine Internet Service Providers (ISPs)^(*1), five Internet Exchange (IX) organizations^(*2), and some researchers^(*3).

• Main points

The total download traffic of Japan’s fixed broadband Internet service^(*4) subscribers as of November 2021 was estimated to be approximately 23.7 Tbps (approximately 170 GB per contract per month^(*5)), i.e., an increase of 19.3% from the same month of the previous year.

Note 1: Nine ISPs: Internet Initiative Japan Inc., NTT Communications Corporation, NTT Plala Corporation, K-Opticom Corporation, KDDI Corporation, Jupiter Telecommunications Co., Ltd., SoftBank Corp., Nifty Corporation, and BIGLOBE Inc.

Note 2: Five IX organizations: Internet Multifeed Co., Equinix, Inc., Japan Internet Exchange Co., Ltd., BBIX, Inc., and the WIDE Project.

Note 3: ESAKI Hiroshi, Professor, University of Tokyo, KATO Akira, Professor, Keio University, CHO Kenjiro, Internet Initiative Researcher, SEKIYA Yuji, Professor, University of Tokyo, FUKUDA Kensuke, Associate Professor, National Institute of Informatics

Note 4: FTTH, DSL, CATV, and FWA (Including those provided by corporations)

Note 5: One month is calculated as 30.4375 days