AS63718 Hangzhou YouYun Technology Co., Ltd.

HZ-YOUYUN - Hangzhou YouYun Technology Co., Ltd. · registered in China

IPv4 addresses9,2165 prefixes · <0.001% of announced IPv4

Rank in China#241largest network in CN by IPv4 space, of 601 · <0.01% of CN

Rank worldwide#9,579of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryChina5,117 ASNs registered there

Open AS63718 in ASN lookup Look up an IP in this network (103.105.220.1) All networks in China

IPv4 prefixes

All 5 prefixes, in address order.

103.105.220.0/22
180.178.208.0/20
180.178.224.0/21
180.178.232.0/22
180.178.248.0/22

IPv6 prefixes

All 1 prefix.

2401:d920::/48

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources