AS138345: the STARHUB-MOBILE2 StarHub Ltd network

AS138345 is an internet Autonomous System operated by STARHUB-MOBILE2 StarHub Ltd (Singapore). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS138345?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS138345 was assigned to STARHUB-MOBILE2 StarHub Ltd by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS138345 currently announces 22 IPv4 block(s), totaling about 154.6 thousand addresses (154,624 in all), registered in Singapore. Services from STARHUB-MOBILE2 StarHub Ltd are reached through these addresses.

What it means to see AS138345 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS138345. That means the other end sits on the STARHUB-MOBILE2 StarHub Ltd network (Singapore). 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.