AS7545: the TPG-INTERNET-AP TPG Telecom Limited network

AS7545 is an internet Autonomous System operated by TPG-INTERNET-AP TPG Telecom Limited (Australia). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS7545?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS7545 was assigned to TPG-INTERNET-AP TPG Telecom Limited by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS7545 currently announces 1,186 IPv4 block(s), totaling about 3.1 million addresses (3,058,176 in all), registered in Australia. Services from TPG-INTERNET-AP TPG Telecom Limited are reached through these addresses.

What it means to see AS7545 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS7545. That means the other end sits on the TPG-INTERNET-AP TPG Telecom Limited network (Australia). It can be legitimate — a cloud service, an ISP, a CDN — or an unexpected connection worth checking.

How to see every connection and network your devices reach

Tracing one connection's ASN at a time is tedious. Sentinela, by PC Monitor, maps the devices on your network, shows what is exposed to the internet and helps flag suspicious connections and devices — running on your Windows. Meet Sentinela.