AS10128 IAG-AS-AP Optus Customer Network

IAG-AS-AP is registered under Optus's customer-network umbrella, but the holder is Insurance Australia Group — the 168.140.128.0/17 range it draws from is assigned to Insurance Australia Limited under the netname IAG-AU. IAG is the largest general insurer in Australia and New Zealand, behind NRMA, CGU, SGIO, SGIC and WFI.

What it's used for

IAG's own corporate edge. The AS announces 9 IPv4 prefixes totalling 2,304 addresses, all /24s carved out of a single contiguous 168.140.x block, and no IPv6. That is a company slicing one legacy allocation into per-site or per-function /24s so it can steer them independently, which is ordinary practice for a large enterprise running several data centres and DR sites.

Notable

This is an enterprise network, not a service provider, and the evidence is the pairing of a modest address count with 2 observed BGP neighbours. A carrier of any size peers with hundreds of ASes; two upstreams and a couple of thousand addresses is a company buying transit for itself. The Optus Customer Network label in RIPEstat reflects that Optus administers the AS record on its customer's behalf, an RFC 2270-style arrangement, and it means the traffic belongs to IAG rather than to Optus. Geolocate this to IAG corporate sites in Australia, not to Optus subscribers.

Interesting

The registry entry places the AS at Greystanes, NSW — an insurance company's office park, and a reminder that an AS "located" at a street address is usually an enterprise, not a network operator.