AS16082: the SPITFIRE network

AS16082 is an internet Autonomous System operated by SPITFIRE (the United Kingdom). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS16082?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS16082 was assigned to SPITFIRE by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS16082 currently announces 12 IPv4 block(s), totaling about 79.9 thousand addresses (79,872 in all), registered in the United Kingdom. Services from SPITFIRE are reached through these addresses.

What it means to see AS16082 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS16082. That means the other end sits on the SPITFIRE network (the United Kingdom). 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.