Networks in Australia

1,688 autonomous systems are registered in Australia (AU). Together they announce 38,957,358 IPv4 addresses, 1.24% of the announced total, which ranks Australia #13 of 240 countries.

Autonomous systems1,6881,660 announce IPv4, 28 IPv6 only

IPv4 addresses38,957,3581.24% of announced IPv4 · #13 worldwide

Top 5 networks hold61.7%of Australia's IPv4 space

IPv64,804 x /32 (314,899,853 x /48)463 of 1688 networks (27%) announce IPv6

Small networks542announce a single /24 (256 addresses) or less

Look up AS1221, the largest network in AU Look up any IP or ASN

Top 50 networks in Australia by IPv4 space

#ASNNetworkIPv4 addressesOf AU

1 AS1221 ASN-TELSTRA - Telstra Limited 13,386,240 34.36%

2 AS4804 MPX-AS - Microplex PTY LTD 5,270,784 13.53%

3 AS7545 TPG-INTERNET-AP - TPG Telecom Limited 3,103,744 7.97%

4 AS9443 VOCUS-RETAIL-AU - Vocus Retail 1,143,808 2.94%

5 AS7575 AARNET-AS-AP - Australian Academic and Research Network (AARNet) 1,135,102 2.91%

6 AS133612 VODAFONE-AS-AP - Vodafone Australia Pty Ltd 1,095,168 2.81%

7 AS2764 AAPT - AAPT Limited 1,049,600 2.69%

8 AS4739 INTERNODE-AS - Internode Pty Ltd 677,632 1.74%

9 AS6262 CSIRO - Commonwealth Scientific and Industrial 546,304 1.40%

10 AS7474 OPTUSCOM-AS01-AU - SingTel Optus Pty Ltd 516,352 1.33%

11 AS135887 TELSTRA-BELONG-AP - Belong (Telstra Limited) 458,752 1.18%

12 AS4764 WIDEBAND-AS-AP - Aussie Broadband 394,496 1.01%

13 AS4826 VOCUS-BACKBONE-AS - Vocus Connect International Backbone 329,728 0.85%

14 AS56132 MONASHUNI-AU-AS-AP - Monash University, 236,288 0.61%

15 AS9650 CITEC-AU-AP - QLD Government Business (IT) 226,560 0.58%

16 AS38195 SUPERLOOP-AS-AP - Superloop 200,192 0.51%

17 AS23859 UNSW-AS-AP - University of New South Wales 196,864 0.51%

18 AS9328 DATACOM-AU - DATACOM SYSTEMS (AU) PTY LTD 195,328 0.50%

19 AS38809 VOCUS-VAS-AU - Vocus Advanced Services 184,832 0.47%

20 AS38333 SYMBIO-AS-AU-AP - Symbio Networks 169,984 0.44%

21 AS10143 EXETEL-AS-AP - Exetel Pty Ltd 152,576 0.39%

22 AS140637 MTG-MG - Macquarie Technology Operations Pty Limited 147,456 0.38%

23 AS137409 GSLNETWORKS-AS-AP - GSL Networks Pty LTD 146,432 0.38%

24 AS9555 VzB-AU-AS - Verizon Australia PTY Limited 137,728 0.35%

25 AS10235 NAB-AS-AP - National Australia Bank Limited 136,448 0.35%

26 AS37978 NETTAS-AS-AP - Networking Tasmania 134,656 0.35%

27 AS1851 ADELAIDE-UNIVERSITY-AS-AP - Adelaide University 134,400 0.34%

28 AS9342 ABC-AS-AP - Australian Broadcasting Corporation 131,584 0.34%

29 AS7645 DEAKINUNIVERSITY-AS-AP - Deakin University 131,072 0.34%

30 AS135348 QANTASAIRLTD-AS-AP - QANTAS Airways Limited 131,072 0.34%

31 AS141468 PMC-AS-AP - Department of the Prime Minister and Cabinet 131,072 0.34%

32 AS132321 NTOA-ICT-AU - NORTHERN TERRITORY OF AUSTRALIA 130,304 0.33%

33 AS17766 NEXON-AS-AP - Nexon Asia Pacific Pty Ltd 129,536 0.33%

34 AS24436 UQ-AS-AP - University of Queensland 110,592 0.28%

35 AS24033 ACTIV8ME-AS-AP - Australian Private Networks Pty Ltd 110,592 0.28%

36 AS17477 MCT-SYDNEY - Macquarie Technology Operations Pty Limited 108,800 0.28%

37 AS45671 AS45671-NET-AU - Wholesale Services Provider 104,960 0.27%

38 AS139344 ACTGOV-EDU-AS-AP - ACT Government InTACT Group 97,536 0.25%

39 AS55803 HOSTOPIA-AU - Hostopia Australia Web Pty Ltd 92,928 0.24%

40 AS136518 WA-GOVERNMENT-AS-AP - WA Government project 84,224 0.22%

41 AS10148 UNIMELB-AS-AP - The University of Melbourne, Melbourne, Victoria 78,336 0.20%

42 AS9893 DSE-VIC-GOV-AS - Cenitex 77,056 0.20%

43 AS9723 ISEEK-AS-AP - iseek Communications Pty Ltd 76,544 0.20%

44 AS132029 ASN-TELSTRA-02 - Telstra Limited 73,984 0.19%

45 AS9509 DEWR-AS-AP - Department of Employment and Workplace Relations 73,728 0.19%

46 AS17983 COLES-AU-AS-AP - Coles Supermarkets Australia Pty Ltd 73,728 0.19%

47 AS134111 CSIRO-PAWSEY-AS-AP - Commonwealth Scientific and Industrial Research Organisation 69,888 0.18%

48 AS136247 VICUNI-AS-AP - Victoria University 67,840 0.17%

49 AS136572 TOOTCIO-AS-AP - Office of The Chief Information Officer (OCIO) 67,840 0.17%

50 AS58698 UOW-AU - 1 northfields av 67,072 0.17%

Countries of similar size

#10 Italy #11 Netherlands #12 Russia #14 India #15 Taiwan #16 Spain All countries

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