AS3264: the AUBG-AS 2700 Blagoevgrad, Bulgaria network

AS3264 is an internet Autonomous System operated by AUBG-AS 2700 Blagoevgrad, Bulgaria (Bulgaria). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS3264?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS3264 was assigned to AUBG-AS 2700 Blagoevgrad, Bulgaria by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS3264 currently announces 3 IPv4 block(s), totaling about 4.1 thousand addresses (4,096 in all), registered in Bulgaria. Services from AUBG-AS 2700 Blagoevgrad, Bulgaria are reached through these addresses.

What it means to see AS3264 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS3264. That means the other end sits on the AUBG-AS 2700 Blagoevgrad, Bulgaria network (Bulgaria). 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.