AS135287: the TCOTCOS-AS-AP The Council of the City of Sydney network

AS135287 is an internet Autonomous System operated by TCOTCOS-AS-AP The Council of the City of Sydney (Australia). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS135287?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS135287 was assigned to TCOTCOS-AS-AP The Council of the City of Sydney by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS135287 currently announces 2 IPv4 block(s), totaling 512 addresses (512 in all), registered in Australia. Services from TCOTCOS-AS-AP The Council of the City of Sydney are reached through these addresses.

What it means to see AS135287 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS135287. That means the other end sits on the TCOTCOS-AS-AP The Council of the City of Sydney 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

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