AS199581: the DATARUSH Data Rush IT Services, S.L. network

AS199581 is an internet Autonomous System operated by DATARUSH Data Rush IT Services, S.L. (Spain). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS199581?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS199581 was assigned to DATARUSH Data Rush IT Services, S.L. by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS199581 currently announces 2 IPv4 block(s), totaling about 1.5 thousand addresses (1,536 in all), registered in Spain. Services from DATARUSH Data Rush IT Services, S.L. are reached through these addresses.

What it means to see AS199581 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS199581. That means the other end sits on the DATARUSH Data Rush IT Services, S.L. network (Spain). 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.