asn.dev

Autonomous system

AS18055 CENTRELINK - Department of Human Services

Unclassified APNIC

IPv4 addresses 21.50K 23 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly AU
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Centrelink

Australia · AI-generated

government business network

CENTRELINK is the autonomous system for Centrelink, the Australian government agency operating under the Department of Human Services.

What it's used for

  • The address space carries internal government infrastructure, evidenced by the DHSNET-AU netname and the pst.my.gov.au reverse DNS record.
  • The AS announces 21,504 IPv4 addresses across 23 prefixes and 2 IPv6 prefixes, while maintaining only 2 observed neighbours, indicating a dedicated internal network rather than a transit provider.

Notable

  • Registrants consistently identify the Department of Human Services, with specific administrative contacts for the DHS Network and Gateway.
  • Centrelink was integrated into the Department of Human Services in 2011, a structural change reflected in the current registry holder name.
  • The inventory is dominated by the 161.146.0.0/16 range, with smaller allocations in 203.13.0.0/16 and 192.195.0.0/16.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS1221Telstra Limited914
AS32787Akamai Technologies, Inc.488

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 23 prefixes · 21.50K addresses IPv6 2 prefixes

CountryNamePrefixes
AUAustralia25

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS18055
Registry name
CENTRELINK
Registrant
Department of Human Services
Abuse contact
comms.support@servicesaustralia.gov.au
Registered
2008-09-04
Last changed
2020-07-29
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
79% valid · 19 valid, 5 with no ROA
ROAs
15 authorising AS18055
ASPA
no ASPA record
IRR
88% registered · 21 of 24 announcements 3 other origin
Route objects
121 naming AS18055

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,843 prefixes, as published 2026-11-01. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check