According to Nikkei Sangyo Shimbun newspaper, there were 3.496 billion accesses to major eleven portal sites per month in Japan on average in 2015.
Figure : Portal Site Market Share in Japan, 2015

| Site | Market Share % |
| Yahoo | 44.5 |
| 40.5 | |
| Microsoft | 7.7 |
| NTT | 2.7 |
| Nifty | 1.2 |
| Others | 3.4 |
Source is Nikkei Sangyo Shimbun newspaper, the article on 2016 July 25th.
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