AS31287: the IPACCT-AS IPACCT Ltd., ISP in Bulgaria and Balkans Region network

AS31287 is an internet Autonomous System operated by IPACCT-AS IPACCT Ltd., ISP in Bulgaria and Balkans Region (Bulgaria). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS31287?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS31287 was assigned to IPACCT-AS IPACCT Ltd., ISP in Bulgaria and Balkans Region by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS31287 currently announces 28 IPv4 block(s), totaling about 12.3 thousand addresses (12,288 in all), registered in Bulgaria. Services from IPACCT-AS IPACCT Ltd., ISP in Bulgaria and Balkans Region are reached through these addresses.

What it means to see AS31287 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS31287. That means the other end sits on the IPACCT-AS IPACCT Ltd., ISP in Bulgaria and Balkans Region 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.