AS17908: the TCISL Tata Communications network

AS17908 is an internet Autonomous System operated by TCISL Tata Communications (India). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS17908?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS17908 was assigned to TCISL Tata Communications by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS17908 currently announces 96 IPv4 block(s), totaling about 439 thousand addresses (439,040 in all), registered in India. Services from TCISL Tata Communications are reached through these addresses.

What it means to see AS17908 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS17908. That means the other end sits on the TCISL Tata Communications network (India). 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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