AS51175: the MULTIPLAYPL-AS network

AS51175 is an internet Autonomous System operated by MULTIPLAYPL-AS (Poland). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS51175?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS51175 was assigned to MULTIPLAYPL-AS by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS51175 currently announces 14 IPv4 block(s), totaling about 19.2 thousand addresses (19,200 in all), registered in Poland. Services from MULTIPLAYPL-AS are reached through these addresses.

What it means to see AS51175 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS51175. That means the other end sits on the MULTIPLAYPL-AS network (Poland). 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.