Features of adstir



Since we started our SSP in 2011, We will introduce how adstir ad technology evolved since the RTB started.
We will provide the best solution for all the needs through our own technology.


As a pioneer of SSP who specializes on smartphone, we are connected with domestic/global DSP and we are offering the largest domestic RTB marketplace in Japan.


Through our PMP marketplace, we deliver high-priced and premium ads.

Automatic Yield Optimization

We do CPM evaluation and optimisation from a fair perspective on the basis of the number of requests distributed by adstir, not the number of impressions counted independently by Ad Network.

No Fill Detection

In order not to waste any single impression we redirect automatically the traffic if we detect that there is no available ads from the adnetwork to other network.


As the largest SSP in Japan, we will provide all our know-how's for monetisation to increase our publishers revenue to the next level.

Case studies

Regardless of genre of publishers, adstir has a wide range of case studies, so we will consult based on that know-how.

Procurement of advertisement matched to publishers

By independently procuring advertising campaigns suitable for media, we maximize advertising effectiveness of advertisers and maximize revenue of the publishers.

Consulting of advertisement space

In addition to suggesting new advertisement space and reviewing advertisement leads, we will propose also improvement of users duration time, migration rate and provide overall support.

Technical support

We will respond quickly to all technical issues and support.


In the world of rapidly changing ad techologies, adstir will provide new value to the publishers
through fulfillment of ad formats and multi-device correspondence.

Cross-device advertising

adstir support ad formats available for diffrent devices(PC, Smartphone, Tablet)

Various ad formats

adstir supports different kind of ad formats such as banner, native ad, video ads, interstitial ads and recommended widget.

AMP Compatible

We responded quickly to Google's mobile page acceleration project "AMP". We are responding not only to "AMP" but also to market trends with speed.


adstir covers APAC so we can offer not only domestic ads but also ads from APAC region.


Account registration

Please check the terms of use and fill out the necessary information and we will issue your adstir dashboard account.

Registaration of media and ad spaces

Register information about your site/app and ad spaces from adstir dashboard.

JS tag or SDK implementation

Once our evaluation is done, the ads will be delivered right away if you implement our JS tag or SDK.


Company Name
Main Office
MFPR Shibuya Bldg 9F,1-2-5 Shibuya, Shibuyaku, Tokyo, 150-0002 Japan
Chief Executive Officer
Tomonori Hayakawa
February 20, 1998