Country
Austria
Autonomous systems registered in Austria, largest IPv4 address space first.
Routed networks
643
of 759 registered
IPv4 addresses
12.77M
3,212 prefixes
IPv6 prefixes
988
AT
Networks
| AS | Network | IPv4 addresses | IPv4 prefixes | IPv6 prefixes | Upstreams | Downstreams |
|---|---|---|---|---|---|---|
| AS8412 | T-Mobile Austria GmbH | 2.94M | 124 | 41 | 10 | 63 |
| AS8447 | A1 Telekom Austria AG | 2.79M | 125 | 9 | 34 | 205 |
| AS25255 | Hutchison Drei Austria GmbH | 1.10M | 79 | 14 | 9 | 8 |
| AS8437 | Hutchison Drei Austria GmbH | 682K | 111 | 42 | 2 | 50 |
| AS1853 | ACONET | 335K | 17 | 2 | 11 | 48 |
| AS12605 | LIWEST Kabelmedien GmbH | 255K | 9 | 1 | 19 | 1 |
| AS8445 | SALZBURG AG fur Energie, Verkehr und Telekommunikation | 250K | 36 | 3 | 21 | 3 |
| AS8339 | kabelplus GmbH | 244K | 27 | 3 | 17 | 11 |
| AS8245 | Video-Broadcast GmbH | 138K | 26 | 3 | 14 | 9 |
| AS679 | Technische Universitat Wien | 132K | 2 | 0 | 1 | 0 |
| AS760 | Vienna University | 99.58K | 7 | 0 | 1 | 1 |
| AS5403 | APA-IT Informations Technologie G.m.b.H | 98.56K | 55 | 1 | 6 | 4 |
| AS1764 | Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH | 97.28K | 70 | 13 | 32 | 332 |
| AS42473 | Anexia Cloud Solutions GmbH | 95.23K | 297 | 137 | 90 | 28 |
| AS8387 | Deutsche Telekom Global Business Solutions GmbH | 92.93K | 18 | 3 | 9 | 6 |
| AS25447 | JM-DATA GmbH | 82.18K | 29 | 2 | 7 | 7 |
| AS8562 | A1 Telekom Austria AG | 75.78K | 9 | 1 | 1 | 2 |
| AS51265 | Mass Response Service GmbH | 74.24K | 27 | 3 | 20 | 1 |
| AS6720 | Magistrat der Stadt Wien, Magistratsabteilung 01 | 69.63K | 2 | 2 | 5 | 0 |
| AS1205 | University Linz | 68.10K | 4 | 1 | 1 | 0 |
| AS5385 | Russmedia IT GmbH | 67.84K | 7 | 3 | 9 | 8 |
| AS31382 | CANCOM Austria AG | 67.58K | 6 | 2 | 2 | 1 |
| AS206228 | Andritz AG | 66.56K | 3 | 2 | 1 | 0 |
| AS210543 | Steiermaerkische Krankenanstaltengesellschaft mbH | 65.79K | 2 | 1 | 1 | 0 |
| AS12311 | International Atomic Energy Agency | 65.79K | 2 | 0 | 1 | 0 |
| AS2494 | IDDQD-AS | 65.54K | 1 | 1 | 1 | 0 |
| AS6883 | Parlamentsdirektion | 65.54K | 1 | 1 | 2 | 0 |
| AS15733 | Zumtobel Group AG | 65.54K | 1 | 1 | 1 | 0 |
| AS21079 | Oesterreichische Kontrollbank Aktiengesellschaft | 65.54K | 1 | 1 | 2 | 0 |
| AS1109 | Universitaet Salzburg | 65.54K | 1 | 0 | 1 | 0 |
| AS1110 | of Innsbruck | 65.54K | 1 | 0 | 1 | 0 |
| AS1111 | Universitaet Klagenfurt | 65.54K | 1 | 0 | 1 | 0 |
| AS1113 | Technische Universitaet Graz | 65.54K | 1 | 0 | 1 | 1 |
| AS1114 | IDDQD-AS | 65.54K | 1 | 0 | 1 | 0 |
| AS1776 | Vienna University of Economics and Business | 65.54K | 1 | 0 | 1 | 0 |
| AS2036 | Joanneum Research Forschungsgesellschaft mbH | 65.54K | 1 | 0 | 1 | 0 |
| AS42114 | PG Austria GmbH | 65.54K | 1 | 0 | 1 | 0 |
| AS199083 | Mediaprint Zeitungs- und Zeitschrifftenverlag Ges.m.b.H. & Co KG | 65.54K | 1 | 0 | 1 | 0 |
| AS211817 | Wirtschafts- und Sozialwissenschaftliches Rechenzentrum | 65.54K | 1 | 0 | 2 | 0 |
| AS3330 | eww ag | 52.22K | 11 | 3 | 19 | 13 |
| AS39912 | oja.at GmbH | 50.18K | 43 | 3 | 12 | 11 |
| AS49808 | Energie AG Oberoesterreich Services und Digital Solutions GmbH | 48.90K | 30 | 2 | 21 | 20 |
| AS35370 | Ainet Telekommunikations-Netzwerk Betriebs GmbH | 40.96K | 28 | 7 | 2 | 1 |
| AS47692 | Nessus GmbH | 40.70K | 79 | 5 | 20 | 26 |
| AS35369 | LINZ STROM GAS WAERME GmbH fuer Energiedienstleistungen und Telekommunikation | 38.40K | 10 | 2 | 9 | 11 |
| AS31543 | myNet GmbH | 36.86K | 26 | 4 | 10 | 190 |
| AS29056 | Citycom Telekommunikation GmbH | 33.28K | 17 | 1 | 6 | 9 |
| AS2488 | International Institute for Applied Systems Analysis | 32.77K | 1 | 1 | 2 | 0 |
| AS57169 | EDIS GmbH | 30.98K | 120 | 20 | 7 | 0 |
| AS31510 | Innsbrucker Kommunalbetriebe AG | 28.16K | 6 | 1 | 20 | 2 |
| AS28919 | Stadtwerke Kufstein GmbH | 26.11K | 20 | 5 | 22 | 1 |
| AS21013 | eww ag | 25.09K | 11 | 3 | 28 | 33 |
| AS15554 | Hutchison Drei Austria GmbH | 24.58K | 6 | 0 | 1 | 0 |
| AS44453 | interneX GmbH | 24.06K | 10 | 2 | 2 | 0 |
| AS24953 | NETPLANET GmbH | 23.04K | 22 | 8 | 13 | 4 |
| AS5404 | conova communications GmbH | 22.27K | 50 | 1 | 23 | 11 |
| AS39560 | KT-NET Communications GmbH | 21.50K | 12 | 1 | 17 | 0 |
| AS28889 | LinzNet Internet Service Provider GmbH | 20.99K | 15 | 0 | 7 | 5 |
| AS35579 | Aktiengesellschaft | 19.71K | 24 | 1 | 2 | 5 |
| AS43957 | WNT Telecommunication GmbH | 18.18K | 10 | 2 | 5 | 6 |
| AS24864 | Raiffeisen Informatik GmbH & Co KG | 17.41K | 39 | 1 | 8 | 2 |
| AS28760 | Infotech EDV-Systeme GmbH | 17.41K | 6 | 1 | 17 | 6 |
| AS34502 | Multikom Austria Telekom GmbH | 16.38K | 1 | 0 | 1 | 0 |
| AS41491 | Stadtwerke Kapfenberg GmbH | 15.36K | 4 | 0 | 4 | 1 |
| AS50920 | Kabel Braunau GmbH | 14.59K | 11 | 1 | 2 | 0 |
| AS48943 | KAPPER NETWORK-COMMUNICATIONS GmbH | 14.08K | 15 | 2 | 7 | 5 |
| AS51184 | Fonira Telekom GmbH | 13.82K | 10 | 5 | 29 | 1 |
| AS59890 | Kabel-TV Lampert GmbH & Co KG | 13.31K | 5 | 4 | 12 | 1 |
| AS12762 | Vorarlberger Informatik- und Telekommunikationsdienstleistungsgesellschaft mbH | 13.31K | 4 | 2 | 5 | 0 |
| AS20751 | AZISTA GmbH | 13.06K | 9 | 0 | 6 | 4 |
| AS29081 | WVNET Information und Kommunikation GmbH | 12.80K | 6 | 1 | 17 | 0 |
| AS6798 | Net4You Internet GmbH | 12.80K | 3 | 1 | 4 | 0 |
| AS41363 | DI Gabriele Maria Plutzar | 12.54K | 5 | 0 | 2 | 0 |
| AS29545 | iPlace Internet & Network Services GmbH | 12.29K | 29 | 1 | 4 | 0 |
| AS34347 | HALLAG Kommunal GmbH | 12.29K | 8 | 1 | 33 | 13 |
| AS29287 | Wien Energie GmbH | 12.03K | 6 | 2 | 5 | 3 |
| AS56833 | mieX GmbH | 11.78K | 5 | 0 | 1 | 1 |
| AS34785 | Stadtwerke Klagenfurt AG | 11.01K | 9 | 1 | 2 | 0 |
| AS24824 | Gebrueder-Weiss GmbH | 10.75K | 14 | 3 | 4 | 0 |
| AS20704 | Jumper GmbH | 10.24K | 7 | 0 | 3 | 0 |
| AS202664 | Jumper GmbH | 10.24K | 7 | 0 | 2 | 4 |
| AS35765 | Gemeindewerke Telfs GmbH | 10.24K | 6 | 0 | 2 | 0 |
| AS12991 | Amt der Ooe. Landesregierung | 10.24K | 3 | 1 | 2 | 0 |
| AS34694 | Stadtwerke Woergl GmbH | 10.24K | 3 | 1 | 3 | 0 |
| AS43848 | Gamsjaeger Kabel-TV & ISP Betriebs GmbH | 9.73K | 23 | 0 | 19 | 0 |
| AS49864 | ECS Rockenschaub GmbH | 9.73K | 4 | 2 | 2 | 0 |
| AS47132 | Innonet ICT-Services GmbH | 9.47K | 13 | 3 | 2 | 0 |
| AS34318 | ASAK Glasfaser GmbH | 9.47K | 3 | 0 | 1 | 0 |
| AS8596 | hotze.com GmbH | 9.22K | 2 | 1 | 5 | 1 |
| AS12577 | MMC GmbH | 9.22K | 2 | 1 | 7 | 5 |
| AS44385 | NA-NET Communications GmbH | 9.22K | 2 | 1 | 1 | 0 |
| AS39878 | Peter Rauter GmbH | 8.96K | 8 | 1 | 20 | 1 |
| AS51066 | Austro Control Oesterreichische Gesellschaft fuer Zivilluftfahrt mit beschraenkter Haftung | 8.96K | 6 | 1 | 3 | 0 |
| AS44133 | IPAX GmbH | 8.70K | 15 | 2 | 1 | 2 |
| AS12401 | internic Datenkommunikations GmbH | 8.70K | 3 | 1 | 6 | 0 |
| AS30971 | nic.at GmbH | 8.45K | 4 | 2 | 8 | 3 |
| AS12895 | Erste Digital GmbH | 8.45K | 2 | 0 | 7 | 0 |
| AS207203 | TIMEWARP IT Consulting GmbH | 8.19K | 15 | 2 | 9 | 3 |
| AS60517 | Noehmer Cablevision GmbH | 8.19K | 8 | 0 | 16 | 0 |
| AS8547 | Styria IT Solutions GmbH & Co KG | 8.19K | 1 | 2 | 1 | 0 |
Registration country comes from the regional registries' delegation files. A network registered here may announce space used anywhere.