AS50957: the MEMSET network

AS50957 is an internet Autonomous System operated by MEMSET (the United Kingdom). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS50957?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS50957 was assigned to MEMSET by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS50957 currently announces 8 IPv4 block(s), totaling about 21.5 thousand addresses (21,504 in all), registered in the United Kingdom. Services from MEMSET are reached through these addresses.

What it means to see AS50957 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS50957. That means the other end sits on the MEMSET network (the United Kingdom). 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.