AS56307 ac3, Australian Centre for Advanced Computing and Communications

AC3-AS-AP - ac3, Australian Centre for Advanced Computing and Communications · registered in Australia

IPv4 addresses7,68012 prefixes · <0.001% of announced IPv4

Rank in Australia#179largest network in AU by IPv4 space, of 1,660 · 0.02% of AU

Rank worldwide#11,132of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryAustralia1,688 ASNs registered there

Open AS56307 in ASN lookup Look up an IP in this network (103.227.20.1) All networks in Australia

IPv4 prefixes

All 12 prefixes, in address order.

103.227.20.0/22
139.5.172.0/23
202.47.84.0/23
202.52.45.0/24
202.59.246.0/24
202.129.148.0/22
202.129.152.0/21
203.3.178.0/23
203.3.188.0/23
203.22.104.0/23
203.166.218.0/24
203.202.0.0/24

IPv6 prefixes

All 1 prefix.

2001:df1:3a00::/48

Other ASNs named ac3, Australian Centre for Advanced Computing and Communications

1 other network uses the same organisation name; together with AS56307 they announce 17,408 IPv4 addresses.

ASNNameIPv4 addresses

AS17918AC3-AS-AP - ac3, Australian Centre for Advanced Computing and Communications AU9,728

Similar-sized networks in Australia

ASNNameIPv4 addresses

AS23669#176 UIP-SYD1-AS-AP - United IP - Transit AS - Broadband Provider,7,936

AS139049#177 GIGACOMM-AS-AP - GIGACOMM PTY LTD7,680

AS58580#178 Fastrack - Fastrack Technology7,680

AS18431#180 DFAT-AS-AP - Department of Foreign Affairs and Trade7,680

AS133736#181 SYNTELPTYLTD-AU - TASMANET7,680

AS24541#182 HOSTAWAYPTYLTD-AS-AP - HostAway Pty Ltd7,424

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