AS10139: the SMARTBRO-PH-AP Smart Broadband, Inc. network

AS10139 is an internet Autonomous System operated by SMARTBRO-PH-AP Smart Broadband, Inc. (the Philippines). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS10139?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS10139 was assigned to SMARTBRO-PH-AP Smart Broadband, Inc. by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS10139 currently announces 24 IPv4 block(s), totaling about 176.4 thousand addresses (176,384 in all), registered in the Philippines. Services from SMARTBRO-PH-AP Smart Broadband, Inc. are reached through these addresses.

What it means to see AS10139 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS10139. That means the other end sits on the SMARTBRO-PH-AP Smart Broadband, Inc. network (the Philippines). 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.