AS6866: the CYTA-NETWORK Internet Services network

AS6866 is an internet Autonomous System operated by CYTA-NETWORK Internet Services (CY). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS6866?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS6866 was assigned to CYTA-NETWORK Internet Services by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS6866 currently announces 43 IPv4 block(s), totaling about 541.4 thousand addresses (541,440 in all), registered in CY. Services from CYTA-NETWORK Internet Services are reached through these addresses.

What it means to see AS6866 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS6866. That means the other end sits on the CYTA-NETWORK Internet Services network (CY). 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.