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Austria
Networks in Austria
646 autonomous systems are registered in Austria (AT). Together they announce 10,336,511 IPv4 addresses, 0.33% of the announced total, which ranks Austria #35 of 240 countries.
Autonomous systems 646 619 announce IPv4, 27 IPv6 only
IPv4 addresses 10,336,511 0.33% of announced IPv4 · #35 worldwide
Top 5 networks hold 55.7% of Austria's IPv4 space
IPv6 1,109 x /32 (72,707,093 x /48) 320 of 646 networks (50%) announce IPv6
Small networks 201 announce a single /24 (256 addresses) or less
Top 50 networks in Austria by IPv4 space
# ASN Network IPv4 addresses Of AT
1
AS8447 A1TELEKOM-AT A1 Telekom Austria AG
2,743,808
26.54%
2
AS8412 TMA T-Mobile Austria GmbH
1,554,176
15.04%
3
AS25255 H3G-Austria-AS Hutchison Drei Austria GmbH
575,232
5.57%
4
AS8437 UTA-AS Hutchison Drei Austria GmbH
550,399
5.32%
5
AS1853 ACOnet - ACONET
334,080
3.23%
6
AS8445 SALZBURG-AG-AS SALZBURG AG fur Energie, Verkehr und Telekommunikation
249,600
2.41%
7
AS8339 KABSI-AS kabelplus GmbH
242,688
2.35%
8
AS12605 LIWEST-AT LIWEST Kabelmedien GmbH
189,440
1.83%
9
AS679 TUNET-AS Technische Universitat Wien
132,096
1.28%
10
AS760 UniVie - Vienna University
99,584
0.96%
11
AS42473 AS-ANEXIA Anexia Cloud Solutions GmbH
94,464
0.91%
12
AS8387 T-SYSTEMS-AT Deutsche Telekom Global Business Solutions GmbH
91,648
0.89%
13
AS5403 AS5403 APA-IT Informations Technologie G.m.b.H
87,552
0.85%
14
AS1764 NEXTLAYER-AS Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
81,152
0.79%
15
AS8245 VIDEOBROADCAST-AS Video-Broadcast GmbH
75,776
0.73%
16
AS8562 LICPLUS-AS A1 Telekom Austria AG
75,776
0.73%
17
AS6720 MAGWIEN Magistrat der Stadt Wien, Magistratsabteilung 01
69,632
0.67%
18
AS1205 JKU-LINZ-AS - University Linz
68,096
0.66%
19
AS31382 CANCOM-Austria-IT CANCOM Austria AG
67,584
0.65%
20
AS5385 RUSSMEDIA-IT Russmedia IT GmbH
67,584
0.65%
21
AS206228 ANDRITZ01 Andritz AG
66,304
0.64%
22
AS6883 Parlamentsdirektion
65,536
0.63%
23
AS15733 ZUMTOBEL-AS Zumtobel Group AG
65,536
0.63%
24
AS2494 MUWNET - IDDQD-AS
65,536
0.63%
25
AS21079 OEKB-AS Oesterreichische Kontrollbank Aktiengesellschaft
65,536
0.63%
26
AS210543 KAGES Steiermaerkische Krankenanstaltengesellschaft mbH
65,536
0.63%
27
AS1109 UNI-SALZBURG - Universitaet Salzburg
65,536
0.63%
28
AS1110 University of Innsbruck
65,536
0.63%
29
AS1111 UNSPECIFIED - Universitaet Klagenfurt
65,536
0.63%
30
AS1113 TUGNET - Technische Universitaet Graz
65,536
0.63%
31
AS1114 UNSPECIFIED - IDDQD-AS
65,536
0.63%
32
AS1776 WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business
65,536
0.63%
33
AS2036 JOANNEUM - Joanneum Research Forschungsgesellschaft mbH
65,536
0.63%
34
AS12311 IAEA International Atomic Energy Agency
65,536
0.63%
35
AS42114 VNWT-AS PG Austria GmbH
65,536
0.63%
36
AS199083 MP-AS Mediaprint Zeitungs- und Zeitschrifftenverlag Ges.m.b.H. & Co KG
65,536
0.63%
37
AS211817 WSR Wirtschafts- und Sozialwissenschaftliches Rechenzentrum
65,536
0.63%
38
AS25447 JM-DATA JM-DATA GmbH
57,088
0.55%
39
AS51265 MASSRESPONSE-AS Mass Response Service GmbH
52,992
0.51%
40
AS39912 i3B-AS oja.at GmbH
49,920
0.48%
41
AS3330 PROFINET-AT eww ag
49,664
0.48%
42
AS49808 POWERSPEED-AS Energie AG Oberoesterreich Services und Digital Solutions GmbH
48,896
0.47%
43
AS35369 LINZAG-TELEKOM-AS LINZ STROM GAS WAERME GmbH fuer Energiedienstleistungen und Telekommunikation
38,400
0.37%
44
AS47692 NESSUS Nessus GmbH
37,376
0.36%
45
AS31543 MYNET-AS myNet GmbH
34,560
0.33%
46
AS29056 CITYCOM-AS Citycom Telekommunikation GmbH
33,280
0.32%
47
AS2488 IIASA-NET International Institute for Applied Systems Analysis
32,768
0.32%
48
AS57169 EDIS-AS-EU EDIS GmbH
31,232
0.30%
49
AS31510 IKB-AS Innsbrucker Kommunalbetriebe AG
27,904
0.27%
50
AS35370 AINET-AS Ainet Telekommunikations-Netzwerk Betriebs GmbH
25,600
0.25%
Countries of similar size
IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources