AS37228: the Olleh-Rwanda-Networks network

AS37228 is an internet Autonomous System operated by Olleh-Rwanda-Networks (RW). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS37228?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS37228 was assigned to Olleh-Rwanda-Networks by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS37228 currently announces 9 IPv4 block(s), totaling about 77.3 thousand addresses (77,312 in all), registered in RW. Services from Olleh-Rwanda-Networks are reached through these addresses.

What it means to see AS37228 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS37228. That means the other end sits on the Olleh-Rwanda-Networks network (RW). 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.