AS37315: the CipherWave network

AS37315 is an internet Autonomous System operated by CipherWave (South Africa). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS37315?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS37315 was assigned to CipherWave by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS37315 currently announces 6 IPv4 block(s), totaling about 42 thousand addresses (41,984 in all), registered in South Africa. Services from CipherWave are reached through these addresses.

What it means to see AS37315 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS37315. That means the other end sits on the CipherWave network (South Africa). 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.