| 3901 | Activity Group | 1 |
| 3902 | ACW | 1 |
| 3903 | Adactum | 1 |
| 3904 | AdamCode | 1 |
| 3905 | ADAURUM Group | 1 |
| 3906 | Adcase | 1 |
| 3907 | ADCI Solutions | 1 |
| 3908 | Adcome | 1 |
| 3909 | ADDA Agency | 1 |
| 3910 | Additiva | 1 |
| 3911 | ADDLAB | 1 |
| 3912 | AddWeb - студия | 1 |
| 3913 | Adelex | 1 |
| 3914 | Адена | 1 |
| 3915 | ADEPTUM DIGITAL PRODUCTION | 1 |
| 3916 | AdFlex Media | 1 |
| 3917 | Adfocus | 1 |
| 3918 | Adgasm.io | 1 |
| 3919 | A.Digital | 1 |
| 3920 | ADJOY | 1 |
| 3921 | ADK Agency | 1 |
| 3922 | ADMIRE AGENCY | 1 |
| 3923 | admitad | 1 |
| 3924 | ADM MEDIA | 1 |
| 3925 | Adnate | 1 |
| 3926 | Adnet | 1 |
| 3927 | AdNow | 1 |
| 3928 | AdQuantum | 1 |
| 3929 | Adrus | 1 |
| 3930 | Adsbalance | 1 |
| 3931 | AdsGet | 1 |
| 3932 | Ads-Hunter | 1 |
| 3933 | ADSLab | 1 |
| 3934 | Adsolution | 1 |
| 3935 | Ads Pro | 1 |
| 3936 | АДС-Софт | 1 |
| 3937 | AdsTarget | 1 |
| 3938 | Adsup | 1 |
| 3939 | adtimes.ru | 1 |
| 3940 | Adumentum | 1 |
| 3941 | Ad-unions | 1 |
| 3942 | Ad-Up | 1 |
| 3943 | Advanced Group | 1 |
| 3944 | Advanced Web-Tehnologies, LLC | 1 |
| 3945 | Advark | 1 |
| 3946 | АДВЕКОН | 1 |
| 3947 | Adventura | PR & Digital | 1 |
| 3948 | Adverica | 1 |
| 3949 | Advertive | 1 |
| 3950 | Advertizator | 1 |
