subnet.im

AS4804Optus (Microplex PTY LTD)

AustraliaRegistryAPNICTypeEyeball

As of 10th November 2026, AS4804 (Optus (Microplex PTY LTD)), an access network registered in Australia with APNIC, originates 285 IPv4 prefixes covering 9.3M addresses and 112 IPv6 prefixes. By IPv4 address space that makes it the 74th-largest of the 80,733 networks we see originating IPv4, and the 2nd-largest of 1,696 in Australia. It is seen behind 2 upstream networks, most often AS7474 (SingTel Optus Pty Ltd) and AS17719 (SingTel Optus Pty Ltd), and in front of 1 downstream network. Over 99% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 99% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

285

IPv6 prefixes

112

IPv4 addresses

9.3M

IPv6 /64s

2.2B

Upstream graph

The networks AS4804 is seen behind, one and two hops out, drawn from real AS paths.

AS4804Toward the internet core
Upstream graph for AS4804: 4 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS4804Optus (Microplex …This networkAS7474SingTel Optus Pty…AS17719SingTel Optus Pty…AS3257GTT Communication…AS7473Singapore Telecom…

Networks observed one and two hops upstream of AS4804 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

6

adjacent networks

Upstreams
233%
Peers
350%
Downstreams
117%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS4804
NetworkCountryRelationshipPathsVantage pts
AS7474SingTel Optus Pty LtdAUPeer27,937137
AS17719SingTel Optus Pty LtdAUPeer12261

Prefixes

All 397

The largest blocks AS4804 originates, widest first.

Largest prefixes originated by AS4804
PrefixAddressesVisibility
49.176.0.0/121M74/76
49.192.0.0/13524k74/76
58.104.0.0/13524k74/76
122.104.0.0/13524k74/76
175.32.0.0/13524k74/76
1.40.0.0/14262k75/76
110.20.0.0/14262k75/76
114.72.0.0/14262k75/76
211.28.0.0/14262k75/76
220.236.0.0/14262k75/76

Routing health

How AS4804's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid99.7%396
  • Invalid0.3%1
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more98.7%392
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%1.3%5

Prefix sizes

IPv4 — 285 prefixes

IPv6 — 112 prefixes

  • /332.1B × /640.9%1
  • /4865.5k × /6499.1%111

Recent changes

Announcements that started or stopped since 11th Oct 2026.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.