AS12337: the NORIS-NETWORK IT Service Provider located in Nuernberg, Germany network

AS12337 is an internet Autonomous System operated by NORIS-NETWORK IT Service Provider located in Nuernberg, Germany (Germany). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS12337?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS12337 was assigned to NORIS-NETWORK IT Service Provider located in Nuernberg, Germany by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS12337 currently announces 57 IPv4 block(s), totaling about 114.9 thousand addresses (114,944 in all), registered in Germany. Services from NORIS-NETWORK IT Service Provider located in Nuernberg, Germany are reached through these addresses.

What it means to see AS12337 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS12337. That means the other end sits on the NORIS-NETWORK IT Service Provider located in Nuernberg, Germany network (Germany). 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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