AS207645: the FWNETWORKS-AS network

AS207645 is an internet Autonomous System operated by FWNETWORKS-AS (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 AS207645?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS207645 was assigned to FWNETWORKS-AS by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS207645 currently announces 16 IPv4 block(s), totaling about 14.8 thousand addresses (14,848 in all), registered in the United Kingdom. Services from FWNETWORKS-AS are reached through these addresses.

What it means to see AS207645 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS207645. That means the other end sits on the FWNETWORKS-AS 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.