AS27665: the Columbus Communications Trinidad Limited. network

AS27665 is an internet Autonomous System operated by Columbus Communications Trinidad Limited. (TT). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS27665?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS27665 was assigned to Columbus Communications Trinidad Limited. by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS27665 currently announces 10 IPv4 block(s), totaling about 148.7 thousand addresses (148,736 in all), registered in TT. Services from Columbus Communications Trinidad Limited. are reached through these addresses.

What it means to see AS27665 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS27665. That means the other end sits on the Columbus Communications Trinidad Limited. network (TT). 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.