AS34010: the YAHOO-IRD network

AS34010 is an internet Autonomous System operated by YAHOO-IRD (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 AS34010?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS34010 was assigned to YAHOO-IRD by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS34010 currently announces 20 IPv4 block(s), totaling about 30.7 thousand addresses (30,720 in all), registered in the United Kingdom. Services from YAHOO-IRD are reached through these addresses.

What it means to see AS34010 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS34010. That means the other end sits on the YAHOO-IRD 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.