AS137120: the NASNET-AS-IN Nas Internet Services Private Limited network

AS137120 is an internet Autonomous System operated by NASNET-AS-IN Nas Internet Services Private Limited (India). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS137120?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS137120 was assigned to NASNET-AS-IN Nas Internet Services Private Limited by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS137120 currently announces 6 IPv4 block(s), totaling about 2 thousand addresses (2,048 in all), registered in India. Services from NASNET-AS-IN Nas Internet Services Private Limited are reached through these addresses.

What it means to see AS137120 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS137120. That means the other end sits on the NASNET-AS-IN Nas Internet Services Private Limited 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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