AS9224 SWOOP-AS-AP Swoop Telecommunications Pty Ltd

AS9224 (SWOOP-AS-AP) is held by Swoop Telecommunications Pty Ltd, the Australian broadband provider that operated as Cirrus Communications before being renamed. Swoop is a fixed-wireless and fibre ISP that grew by absorbing a string of regional Australian operators, and this AS carries the former Cirrus estate.

What it's used for

RIS sees 4 IPv4 prefixes carrying 22,528 addresses, no IPv6, and just 1 observed neighbour. The single neighbour is the key detail: this is not an independently multihomed transit network but an address estate announced through the group's own upstream, which is exactly what happens when an acquired operator's ASN survives as a route holder while the parent consolidates transit under a different AS.

The reverse DNS confirms both the identity and the role. Router addresses resolve under rtr.cirruscomms.net.au with location-coded names (sau-win-rt1, qld-mba-rt1, mpls-bat), while customer-facing addresses fall into a generic <ip>.static.as58511.net pattern — the naming convention of another AS in the same corporate group. So the space is carried on Cirrus-branded infrastructure and hands out static addresses under the group's shared scheme. Four large aggregates (two /19s, a /20 and a /21) with structured router naming across Australian states is an access network serving end customers, not a hosting or enterprise block.

Notable

• The cirruscomms.net.au router names are a pre-rebrand artefact still visible in the live network; the operating brand today is Swoop.
• Swoop's roots are in fixed-wireless coverage, which is reflected in the geographically dispersed router naming rather than a single-datacentre footprint.