AS9924: the TFN-TW Taiwan Fixed Network, Telco and Network Service Provider. network

AS9924 is an internet Autonomous System operated by TFN-TW Taiwan Fixed Network, Telco and Network Service Provider. (Taiwan). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS9924?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS9924 was assigned to TFN-TW Taiwan Fixed Network, Telco and Network Service Provider. by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS9924 currently announces 178 IPv4 block(s), totaling about 1.5 million addresses (1,512,192 in all), registered in Taiwan. Services from TFN-TW Taiwan Fixed Network, Telco and Network Service Provider. are reached through these addresses.

What it means to see AS9924 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS9924. That means the other end sits on the TFN-TW Taiwan Fixed Network, Telco and Network Service Provider. network (Taiwan). 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

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