AS17789 CNCGROUP IP network of ShangHai IDC

CNCGROUP-SH-IDC - CNCGROUP IP network of ShangHai IDC · registered in China

IPv4 addresses65,2808 prefixes · 0.002% of announced IPv4

Rank in China#137largest network in CN by IPv4 space, of 601 · 0.02% of CN

Rank worldwide#3,479of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryChina5,117 ASNs registered there

Open AS17789 in ASN lookup Look up an IP in this network (27.99.128.1) All networks in China

IPv4 prefixes

All 8 prefixes, in address order.

27.99.128.0/17
42.0.128.0/18
42.0.192.0/21
42.0.201.0/24
42.0.202.0/23
42.0.204.0/22
42.0.208.0/20
42.0.224.0/19

Similar-sized networks in China

ASNNameIPv4 addresses

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

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

AS24357#136 CNGI-GZ-IX-AS-AP - CERNET2 IX at South China University of Technology65,280

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

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

AS140345#140 CHINATELECOM-YUNNAN-SHENGJI-5G-NETWORK - CHINATELECOM Yunnan province Shengji 5G network63,232

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