AS4804 — MPX-AS Microplex PTY LTD

Network type: mobile

AS4804 announces 32 IPv4 prefixes covering 5,270,784 addresses and 2 IPv6 prefixes.

About this network

Optus (Microplex PTY LTD, SingTel Optus) — one of Australia's largest telecom operators, owned by Singapore's Singtel. This ASN carries both mobile and consumer fixed traffic.

What it's used for

• Mobile data for millions of Australian subscribers (4G/5G), plus fixed broadband (NBN resale and cable).

Notable

• A large "eyeball" network — addresses are typically mobile devices or consumer home connections, often behind carrier-grade NAT.
• The second-largest Australian carrier after Telstra, competing also with TPG and Vodafone Australia.

Interesting

• Optus is a wholly owned subsidiary of Singtel, part of a broader regional telecom group across Asia-Pacific.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 1.40.0.0/14
• 1.44.0.0/21
• 1.44.24.0/21
• 1.44.48.0/21
• 49.2.0.0/15
• 49.176.0.0/12
• 49.192.0.0/13
• 58.104.0.0/13
• 58.145.128.0/19
• 61.88.184.0/23
• 61.88.186.0/24
• 61.88.190.0/24
• 106.70.0.0/15
• 110.20.0.0/14
• 110.32.0.0/15
• 114.72.0.0/14
• 114.76.0.0/15
• 119.225.240.0/21
• 122.104.0.0/13
• 175.32.0.0/13
• 180.216.0.0/16
• 192.131.13.0/24
• 198.142.0.0/16
• 202.139.72.0/22
• 203.2.75.0/24
• 203.10.68.0/24
• 203.164.0.0/16
• 203.202.52.0/23
• 203.213.128.0/19
• 210.49.0.0/16
• 211.28.0.0/14
• 220.236.0.0/14
• 2405:dc00:fe::/47
• 2405:dc00:8000::/33

Upstream networks

• AS7474 SingTel Optus Pty Ltd
• AS17719 SingTel Optus Pty Ltd

Downstream networks

• AS20940 Akamai International B.V.

Adjacent networks

• AS7474 SingTel Optus Pty Ltd
• AS17719 SingTel Optus Pty Ltd
• AS20940 Akamai International B.V.