AS138545: the ZCCCCL-AS-AP Zero Cirrus Cloud Computing Shanghai Co., Ltd. network

AS138545 is an internet Autonomous System operated by ZCCCCL-AS-AP Zero Cirrus Cloud Computing Shanghai Co., Ltd. (China). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS138545?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS138545 was assigned to ZCCCCL-AS-AP Zero Cirrus Cloud Computing Shanghai Co., Ltd. by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS138545 currently announces 1 IPv4 block(s), totaling 512 addresses (512 in all), registered in China. Services from ZCCCCL-AS-AP Zero Cirrus Cloud Computing Shanghai Co., Ltd. are reached through these addresses.

What it means to see AS138545 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS138545. That means the other end sits on the ZCCCCL-AS-AP Zero Cirrus Cloud Computing Shanghai Co., Ltd. network (China). It can be legitimate — a cloud service, an ISP, a CDN — or an unexpected connection worth checking.

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