AS45474: the NEXUSGUARD-AS-AP NEXUSGUARD LIMITED network

AS45474 is an internet Autonomous System operated by NEXUSGUARD-AS-AP NEXUSGUARD LIMITED (Singapore). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS45474?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS45474 was assigned to NEXUSGUARD-AS-AP NEXUSGUARD LIMITED by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS45474 currently announces 37 IPv4 block(s), totaling about 22.8 thousand addresses (22,784 in all), registered in Singapore. Services from NEXUSGUARD-AS-AP NEXUSGUARD LIMITED are reached through these addresses.

What it means to see AS45474 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS45474. That means the other end sits on the NEXUSGUARD-AS-AP NEXUSGUARD LIMITED network (Singapore). 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.