| 1 | | Promenade 23 | Linz |  AT | | +43 732210017000 | Graz Citytower | |
| 2 | | Millennium Tower 23. und 24. Etage | Wien | AT | | +43 720815318 | Graz Citytower | |
| 3 | | Kohlmarkt 8–10 1, 2. Etage | Wien | AT | | +43 1227461000 | Graz Citytower | |
| 4 | | Mariahilfer Strasse 36 5, 6. und 7. Etage | Wien | AT | | +43 1230605105 | Graz Citytower | |
| 5 | | The Icon, Wiedner Gürtel 13 | Wien | AT | | +43 12535354000 | Graz Citytower | |
| 6 | | Schottenring 16/2 | Wien | AT | | +43 1537120 | Graz Citytower | |
| 7 | | Fleischmarkt 1/6, 12 | Wien | AT | | +43 12051073000 | Graz Citytower | |
| 8 | | Mariahilfer Straße 123/3 3. Etage | Wien | AT | | +43 1599990 | Graz Citytower | |
| 9 | | Brückenkopfgasse 1 Regus City Tower, 6. Etage | Graz | AT | | +43 31623100100 | Graz Citytower | |
| 10 | | 1st, 2nd and 4th Floors, Waagner-Biro-Straße 47 | Graz | AT | | +43 316231400 | Graz Citytower | |
| 11 | | Vienna Twin Tower, Wienerbergstraße 11/12A | Wien | AT | | +43 1994606109 | Graz Citytower | |
| 12 | | Simmeringer Hauptstraße 24 | Wien | AT | | +43 174040555 | Graz Citytower | |
| 13 | | Graben 19 4. und 5. Etage | Wien | AT | | +43 1230606001 | Graz Citytower | |
| 14 | | Am Europl. 2 | Wien | AT | | +43 1717280 | Michael Graf | |
| 15 | | Ausstellungsstrasse 50 2. Etage | Wien | AT | | +43 12057741000 | Graz Citytower | |
| 16 | | Mooslackengasse 17 | Wien | AT | | +43 43123060 | Graz Citytower | |
| 17 | | Kärntner Ring 5–7 | Wien | AT | | +43 12051160 | Graz Citytower | |
| 18 | | Europaplatz 2/1/2 Regus Westbahnhof, BahnhofCity Wien West | Wien | AT | | +43 1253915500 | Graz Citytower | |
| 19 | | Siezenheimer Str. 35 | Salzburg | AT | | +43 662234529000 | Graz Citytower | |
| 20 | | Office Park I, Top B02 | Wien | AT | | +43 1227870 | Graz Citytower | |