21vianet

Domain
21vianet.com
Service type
Hosting
Countries
China
IPv4 addresses
794,624
IPv6 addresses
7.92 × 1028

21vianet IPv4 address ranges

Prefix Company Number of IPs Example address
120.134.0.0/15 21ViaNet(China),Inc. 131,072 120.134.111.5
124.250.0.0/15 21ViaNet(China),Inc. 131,072 124.250.15.130
182.174.0.0/15 21ViaNet(China),Inc. 131,072 182.175.21.91
183.84.0.0/15 21ViaNet(China),Inc. 131,072 183.84.154.38
120.133.0.0/16 21ViaNet(China),Inc. 65,536 120.133.49.69
211.151.0.0/16 21ViaNet(China),Inc. 65,536 211.151.125.28
119.37.0.0/17 Entrust Network Inc. 32,768 119.37.97.179
120.132.128.0/17 21ViaNet(China),Inc. 32,768 120.132.252.255
59.151.0.0/17 21ViaNet(China),Inc. 32,768 59.151.61.78
119.37.128.0/18 Entrust Network Inc. 16,384 119.37.165.199
203.166.160.0/19 Entrust Network Inc. 8,192 203.166.160.40
210.77.128.0/19 21VIANET 8,192 210.77.142.225
211.152.32.0/19 Entrust Network Inc. 8,192 211.152.55.41

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21vianet IPv6 address ranges

Prefix Company Number of IPs
2403:a200::/32 21ViaNet(China),Inc. 7.92 × 1028

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Autonomous Systems used by 21vianet

ASN Name % of IPs
AS17428
21Vianet.Co.,Ltd 		CHINA-ABITCOOL 50.4%
AS23724
IDC, China Telecommunications Corporation 		CHINANET-IDC-BJ-AP 16.8%
AS9308
Abitcool(China) Inc. 		CHINA-ABITCOOL 12.8%
AS4835
China Telecom (Group) 		CHINANET-IDC-SN 8.0%
AS9802
Abitcool(China) Inc. 		CHINA-ABITCOOL 5.4%
AS4808
China Unicom Beijing Province Network 		CHINA169-BJ <1%
AS133119
China Unicom IP network 		UNICOM-CN <1%
AS4811
China Telecom (Group) 		CHINANET-SHANGHAI-MAN <1%
AS17621
China Unicom Shanghai network 		CNCGROUP-SH <1%
AS58466
CHINANET Guangdong province network 		CT-Guangzhou-IDC <1%
AS138421
China Unicom 		CU-CN-AS <1%
AS133111
CERNET New Technology Co., Ltd 		CNT-northChina <1%
— Not currently routed 3.3%

21vianet IP address country distribution

Country % of IPs
China 		100.0% 21vianet IP addresses hosted in China

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