AS10199: the TATA-AS Tata Communications Ltd network

AS10199 is an internet Autonomous System operated by TATA-AS Tata Communications Ltd (India). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS10199?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS10199 was assigned to TATA-AS Tata Communications Ltd by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS10199 currently announces 35 IPv4 block(s), totaling about 150.3 thousand addresses (150,272 in all), registered in India. Services from TATA-AS Tata Communications Ltd are reached through these addresses.

What it means to see AS10199 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS10199. That means the other end sits on the TATA-AS Tata Communications Ltd 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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