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Country

Australia

Oceania AU
IPv4 addresses
53,030,316
CIDR ranges
12,367
Global rank · IPv4
#12 of 250
ASNs
1,999
Organizations
1,865
Regions / states
8

Top ASNs

ASNNameIPs
AS1221 Telstra Limited 13.39M
AS4804 Microplex PTY LTD 5.27M
AS7545 TPG Telecom Limited 3.07M
AS16509 Amazon.com, Inc. 1.79M
AS9443 Vocus Retail 1.14M
AS7575 Australian Academic and Research Network (AARNet) 1.14M
AS133612 Vodafone Australia Pty Ltd 1.10M
AS2764 AAPT Limited 1.07M
AS4739 Internode Pty Ltd 674.3K
AS8075 Microsoft Corporation 604.7K
AS6262 Commonwealth Scientific and Industrial 546.3K
AS7474 SingTel Optus Pty Ltd 515.3K
AS703 Verizon Business 461.1K
AS135887 Belong (Telstra Limited) 458.8K
AS4764 Aussie Broadband 390.7K
AS4826 Vocus Connect International Backbone 326.9K
AS56132 Monash University, 236.3K
AS9650 QLD Government Business (IT) 226.6K
AS31898 Oracle Corporation 225.0K
AS140637 Macquarie Technology Operations Pty Limited 205.6K
AS38195 Superloop 198.4K
AS23859 University of New South Wales 196.9K
AS9328 DATACOM SYSTEMS (AU) PTY LTD 194.8K
AS16625 Akamai Technologies, Inc. 184.3K
AS38809 Vocus Advanced Services 183.3K

Regions / states / provinces

Network composition

How Australia's allocated IPv4 space breaks down by operator type, regional registry, and block size.

By operator category
CategoryIPv4Share
Enterprise 18.10M
58.6%
ISP / Telecom 7.45M
24.1%
Academic / Research 3.05M
9.9%
Mobile 1.19M
3.9%
Government 885.8K
2.9%
Hosting / Cloud 193.5K
0.6%
CDN 9.5K
0.0%
By regional registry (RIR)
RegistryIPv4Share
APNIC 45.93M
86.6%
ARIN 6.21M
11.7%
RIPE NCC 852.0K
1.6%
AFRINIC 21.3K
0.0%
LACNIC 17.9K
0.0%
Prefix-size distribution (network ranges by block size)
/8–/15
81
/16–/19
740
/20–/22
2,254
/23
1,874
/24
3,788
/25–/28
1,395
/29–/32
2,235

Routing & security

Live BGP routing footprint for Australia from our global collectors, with RPKI route-origin validation coverage.

Announced prefixes
55,473
Origin ASNs
2,254
RPKI-valid
53.3%
29,552 of 55,473 ROA-covered

RPKI-valid % = announced prefixes with a matching Route Origin Authorization. Live routing →

Web3 footprint

Australia hosts 362 observed decentralized-network nodes across 9 networks. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

Reverse-DNS, threat intelligence & internet health

How much of Australia's address space resolves to a hostname, how much appears on public threat blocklists, how widely the population is online, and independent signals of censorship and outages.

Reverse-DNS coverage
43.1%
22.83M IPs with a PTR
On threat blocklists
109
flagged across 8 feeds
Internet adoption
96.1%
of population · 2024
Censorship signal
1.5%
217 confirmed-blocked · 30d
Network outages
2
events · last 90d
Median speed
183 Mbps ↓
37 Mbps ↑ · 26ms
43.1% of allocated IPv4 has a PTR

Reverse-DNS + threat-blocklist footprint from our own scanning & 8 threat-intel feeds. Internet adoption from the World Bank; censorship measurements from OONI; outage detection from IODA / Georgia Tech; connection speed from Cloudflare Radar.

Frequently Asked Questions

How many IPv4 addresses are allocated to Australia?

Australia has 53,030,316 IPv4 addresses allocated across 12,367 network ranges. These allocations are managed by regional internet registries and assigned to organizations operating within the country.

What are the largest internet providers in Australia?

The top organizations in Australia by IP allocation include the major ISPs, hosting providers, and enterprises listed above. These 50 organizations collectively manage the majority of the country's IPv4 address space.

How many ASNs operate in Australia?

Australia has 50 or more registered Autonomous Systems. Each ASN represents an independently routed network, such as an ISP, cloud provider, or enterprise network.

What continent is Australia in?

Australia is located in Oceania. IP address allocations in this region are managed by the regional internet registry.

Last updated: 2026-10-07 00:39:05 UTC
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