AS36442: the MERCURY HEALTHCARE network

AS36442 is an internet Autonomous System operated by MERCURY HEALTHCARE (the United States). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS36442?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS36442 was assigned to MERCURY HEALTHCARE by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS36442 currently announces 1 IPv4 block(s), totaling 256 addresses (256 in all), registered in the United States. Services from MERCURY HEALTHCARE are reached through these addresses.

What it means to see AS36442 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS36442. That means the other end sits on the MERCURY HEALTHCARE network (the United States). 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.