asn.dev

Autonomous system

AS4804 MPX-AS Microplex PTY LTD

Mobile APNIC

IPv4 addresses 5.27M 107 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly AU
Flagged prefixes 0 none

Summary

Optus

Australia · AI-generated

isp mobile eyeball backbone

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. Source, and how to suggest an edit.

Address space

Summary

Full explorer
CountryNamePrefixes
AUAustralia109

Registry

Allocation record

via APNIC RDAP
Registry
APNIC
Handle
AS4804
Registry name
MPX-AS
Registrant
SingTel Optus Pty Ltd
Abuse contact
abuse@optusnet.com.au
Registered
2008-09-04
Last changed
2021-01-15
Status
active

Reputation

Classification and threat

Mobile Cellular carrier. Addresses are shared by many handsets via CGNAT.

No IC3 indicators Nothing from the FBI IC3 feed.

Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check