AS24357 CERNET2 IX at South China University of Technology

CNGI-GZ-IX-AS-AP - CERNET2 IX at South China University of Technology · registered in China

IPv4 addresses65,2808 prefixes · 0.002% of announced IPv4

Rank in China#136largest network in CN by IPv4 space, of 601 · 0.02% of CN

Rank worldwide#3,465of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryChina5,117 ASNs registered there

Open AS24357 in ASN lookup Look up an IP in this network (219.223.0.1) All networks in China

IPv4 prefixes

All 8 prefixes, in address order.

219.223.0.0/17
219.223.128.0/21
219.223.137.0/24
219.223.138.0/23
219.223.140.0/22
219.223.144.0/20
219.223.160.0/19
219.223.192.0/18

IPv6 prefixes

All 1 prefix.

2400:6000::/32

Similar-sized networks in China

ASNNameIPv4 addresses

AS45083#133 BGTELECOM - China UNICOM, Beijing Branch65,536

AS45113#134 DTcoal - Shanxi Datong Coal Group Communication Co., Ltd65,536

AS24349#135 CNGI-BJ-IX3-AS-AP - CERNET2 IX at Peking University65,280

AS17789#137 CNCGROUP-SH-IDC - CNCGROUP IP network of ShangHai IDC65,280

AS59078#138 YUNIFY-NET - Yunify Technologies Inc.63,488

AS56019#139 SHUJUJIA - Beijing ShuJuJia Technology Co., Ltd.63,488

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