| 1 | AS1299 | Arelion (Twelve99) | Upstream | 661 | |
| 2 | AS25255 | Drei Austria | Downstream | 192 | |
| 3 | AS3257 | GTT Communications (AS3257) | Upstream | 103 | |
| 4 | AS1853 | ACOnet | Downstream | 72 | |
| 5 | AS5403 | APA-IT | Downstream | 51 | |
| 6 | AS3356 | Lumen AS3356 | Upstream | 45 | |
| 7 | AS29056 | Citycom Telekommunikation | Downstream | 26 | |
| 8 | AS20751 | AZISTA GmbH | Downstream | 19 | |
| 9 | AS44133 | IPAX Internet Services | Downstream | 18 | |
| 10 | AS47132 | Innonet ICT-Services GmbH | Downstream | 16 | |
| 11 | AS8387 | Deutsche Telekom Global Business Solutions GmbH | Downstream | 15 | |
| 12 | AS28771 | Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH | Downstream | 13 | |
| 13 | AS57763 | SelfNet Internet Ges.m.b.H. | Downstream | 10 | |
| 14 | AS29287 | Wien Energie GmbH | Downstream | 10 | |
| 15 | AS202616 | WE-FTTH-AS | Downstream | 9 | |
| 16 | AS34785 | Stadtwerke Klagenfurt AG | Downstream | 9 | |
| 17 | AS199236 | Emarsys eMarketing Systems AG | Downstream | 8 | |
| 18 | AS51184 | fonira Telekom | Downstream | 8 | |
| 19 | AS42572 | abaton EDV-Dienstleistungs GmbH | Downstream | 8 | |
| 20 | AS42557 | Xidras GmbH | Downstream | 8 | |
| 21 | AS39409 | Sebastian-Wilhelm Graf | Downstream | 8 | |
| 22 | AS59909 | Tele-Tec GmbH | Downstream | 7 | |
| 23 | AS51066 | Austro Control Oesterreichische Gesellschaft fuer Zivilluftfahrt mit beschraenkter Haftung | Downstream | 7 | |
| 24 | AS39508 | AXIANS ICT Austria GmbH | Downstream | 7 | |
| 25 | AS2914 | NTT Global IP Network | Upstream | 7 | |
| 26 | AS205243 | The Test Calls Company FZ-LLE | Downstream | 6 | |
| 27 | AS208245 | Bechtle GmbH | Downstream | 5 | |
| 28 | AS59779 | IXOLIT | Downstream | 5 | |
| 29 | AS47515 | Bundesministerium fuer Inneres, Sektion IV | Downstream | 5 | |
| 30 | AS41363 | DI Gabriele Maria Plutzar | Downstream | 5 | |
| 31 | AS29161 | Verbund Management Service GmbH | Downstream | 5 | |
| 32 | AS8692 | Bundesrechenzentrum GmbH | Downstream | 5 | |
| 33 | AS207921 | Milan Pässler | Downstream | 4 | |
| 34 | AS200683 | Elektro Puehringer GmbH | Downstream | 4 | |
| 35 | AS199015 | Frequentis AG | Downstream | 4 | |
| 36 | AS60368 | GREENTUBE-AT | Downstream | 4 | |
| 37 | AS51890 | Mayr-Melnhof Service GmbH | Downstream | 4 | |
| 38 | AS48151 | Red Bull GmbH | Downstream | 4 | |
| 39 | AS30971 | nic.at | Downstream | 4 | |
| 40 | AS16099 | IT-Services der Sozialversicherung GmbH | Downstream | 4 | |
| 41 | AS8445 | Salzburg AG | Downstream | 4 | |
| 42 | AS6720 | Magistrat der Stadt Wien, Magistratsabteilung 01 | Downstream | 4 | |
| 43 | AS216369 | Jakob Kampichler | | 3 | |
| 44 | AS215048 | International Atomic Energy Agency | Downstream | 3 | |
| 45 | AS211763 | CPS - IT GmbH | Downstream | 3 | |
| 46 | AS202664 | www.Funknetz.at LE GmbH | Downstream | 3 | |
| 47 | AS199205 | Huemer Data Center GmbH | Downstream | 3 | |
| 48 | AS44385 | NA-NET Communications GmbH | Downstream | 3 | |
| 49 | AS42378 | RTR-AS | Downstream | 3 | |
| 50 | AS33917 | Sozialdemokratische Partei Oesterreichs | Downstream | 3 | |
| 51 | AS28857 | DXC Technology Austria GmbH | Downstream | 3 | |
| 52 | AS28848 | United Nations Industrial Development Organization | Downstream | 3 | |
| 53 | AS28839 | United Nations Office at Vienna | Downstream | 3 | |
| 54 | AS28760 | Infotech EDV-Systeme GmbH | Downstream | 3 | |
| 55 | AS9023 | Casinos Austria Aktiengesellschaft | Downstream | 3 | |
| 56 | AS8596 | hotze.com GmbH | Downstream | 3 | |
| 57 | AS212379 | RBKUB Archivierungs GmbH | Downstream | 2 | |
| 58 | AS211666 | EBSWIEN-AS | Downstream | 2 | |
| 59 | AS211060 | VERKEHRSVERBUND-OST-REGION | Downstream | 2 | |
| 60 | AS209571 | UBIMET GmbH | Downstream | 2 | |
| 61 | AS207791 | NTBS-AS | Downstream | 2 | |
| 62 | AS201248 | SCC EDV-Beratung AG | Downstream | 2 | |
| 63 | AS200273 | Lisa Kowalsky | Downstream | 2 | |
| 64 | AS199754 | Arbelon sp. z o.o. | Downstream | 2 | |
| 65 | AS198650 | APPLIED CHEMICALS Handels-GmbH | Downstream | 2 | |
| 66 | AS62239 | Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH | Downstream | 2 | |
| 67 | AS51560 | Greschitz Management GmbH | Downstream | 2 | |
| 68 | AS48984 | STLRG | Downstream | 2 | |
| 69 | AS47477 | REWE International Dienstleistungs GmbH | Downstream | 2 | |
| 70 | AS44760 | Skidata AG | Downstream | 2 | |
| 71 | AS44753 | Bacher Systems EDV GmbH | Downstream | 2 | |
| 72 | AS39394 | NeoTel Telefonservice GmbH & Co KG | Downstream | 2 | |
| 73 | AS35609 | Smart Force e.U. | Downstream | 2 | |
| 74 | AS35492 | Verein FunkFeuer Wien | Downstream | 2 | |
| 75 | AS31382 | Kapsch AG | Downstream | 2 | |
| 76 | AS24992 | DIC - Online Wolf & Co. KG | Downstream | 2 | |
| 77 | AS21079 | Oxydo-MMS FZ-LLC | Downstream | 2 | |
| 78 | AS13068 | Wiener Borse AG | Downstream | 2 | |
| 79 | AS13042 | Oesterreichische Nationalbank | Downstream | 2 | |
| 80 | AS12311 | International Atomic Energy Agency | Downstream | 2 | |
| 81 | AS8787 | Bohmann Druck und Verlag GesmbH und CoKG | Downstream | 2 | |
| 82 | AS8590 | Bayerische Motoren Werke Aktiengesellschaft | Downstream | 2 | |
| 83 | AS6883 | Parlamentsdirektion | Downstream | 2 | |
| 84 | AS215461 | via donau Oesterreichische Wasserstrassen Gesellschaft mbH | Downstream | 1 | |
| 85 | AS211071 | JMP Technology Services GmbH | Downstream | 1 | |
| 86 | AS210237 | WIENER LINIEN GmbH & Co KG | Downstream | 1 | |
| 87 | AS209575 | Nova Group LLC | Downstream | 1 | |
| 88 | AS208323 | Foundation for Applied Privacy | Downstream | 1 | |
| 89 | AS207458 | YUUTEL | Downstream | 1 | |
| 90 | AS206353 | BEV-AS | Downstream | 1 | |
| 91 | AS206148 | Neuhofer Holz GmbH | Downstream | 1 | |
| 92 | AS203717 | dvo Software Entwicklungs- und Vertriebs- GmbH | Downstream | 1 | |
| 93 | AS201951 | Dimoco Direct Mobile Communications GmbH | Downstream | 1 | |
| 94 | AS201459 | Andrea Illsinger | Downstream | 1 | |
| 95 | AS201185 | Kapsch BusinessCom AG | Downstream | 1 | |
| 96 | AS200866 | DATAplexx IT- und Telekommunikationsloesungen GmbH | Downstream | 1 | |
| 97 | AS200112 | DABIS GmbH | Downstream | 1 | |
| 98 | AS199893 | Pensionsversicherungsanstalt | Downstream | 1 | |
| 99 | AS199824 | DaoPay GmbH | Downstream | 1 | |
| 100 | AS199217 | IKARUS Security Software GmbH | Downstream | 1 | |
| 101 | AS198439 | teampool personal service gmbh | Downstream | 1 | |
| 102 | AS197458 | Organization of the Petroleum Exporting Countries | Downstream | 1 | |
| 103 | AS60520 | Allgemeine Unfallversicherungsanstalt | Downstream | 1 | |
| 104 | AS59949 | TEL2TEL-AS | Downstream | 1 | |
| 105 | AS59789 | CISMO Clearing Integrated Services and Market Operations Gmb | Downstream | 1 | |
| 106 | AS58131 | Organization for Security and Co-operation in Europe | Downstream | 1 | |
| 107 | AS56612 | Hel-Wacht Holding GmbH | Downstream | 1 | |
| 108 | AS51767 | Johanniter-Unfall-Hilfe in Oesterreich | Downstream | 1 | |
| 109 | AS49660 | FH Campus Wien | Downstream | 1 | |
| 110 | AS47186 | Allgemeine Baugesellschaft PORR AG | Downstream | 1 | |
| 111 | AS44865 | derStandard.at | Downstream | 1 | |
| 112 | AS39478 | ASFINAG | Downstream | 1 | |
| 113 | AS35317 | Constantia Teich GmbH | Downstream | 1 | |
| 114 | AS31394 | nemox.net | Downstream | 1 | |
| 115 | AS29429 | Allianz Elementar Versicherungs AG | Downstream | 1 | |
| 116 | AS25447 | JM-DATA Telekom GmbH | Downstream | 1 | |
| 117 | AS25101 | euinternet.net | Downstream | 1 | |
| 118 | AS25053 | Generali IT-Solutions GmbH | Downstream | 1 | |
| 119 | AS25011 | OeBB Infrastruktur AG | Downstream | 1 | |
| 120 | AS24777 | Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization | Downstream | 1 | |
| 121 | AS16314 | Magistrat der Stadt Wien, Magistratsabteilung 01 | | 1 | |
| 122 | AS8971 | SIEMENS AG | Downstream | 1 | |
| 123 | AS5404 | conova communications | Downstream | 1 | |