HTTPfy

AS17428 21Vianet.Co.,Ltd

CHINA-ABITCOOL - 21Vianet.Co.,Ltd · registered in China

IPv4 addresses10,49610 prefixes · <0.001% of announced IPv4
Rank in China#230largest network in CN by IPv4 space, of 601 · <0.01% of CN
Rank worldwide#8,811of 79,396 networks with IPv4
IPv665,532 x /4853 prefixes
CountryChina5,117 ASNs registered there
Open AS17428 in ASN lookup Look up an IP in this network (103.253.204.1) All networks in China

IPv4 prefixes

All 10 prefixes, in address order.

  • 103.253.204.0/22
  • 120.132.224.0/21
  • 120.133.240.0/20
  • 182.175.127.0/24
  • 211.148.17.0/24
  • 211.148.18.0/23
  • 211.148.20.0/22
  • 211.148.24.0/23
  • 211.148.27.0/24
  • 211.148.30.0/23

IPv6 prefixes

All 53 prefixes.

  • 2403:a200::/33
  • 2403:a200:8000::/36
  • 2403:a200:9000::/37
  • 2403:a200:9800::/40
  • 2403:a200:9900::/41
  • 2403:a200:9980::/44
  • 2403:a200:9990::/45
  • 2403:a200:9998::/48
  • 2403:a200:999a::/47
  • 2403:a200:999c::/46
  • 2403:a200:99a0::/43
  • 2403:a200:99c0::/42
  • 2403:a200:9a00::/39
  • 2403:a200:9c00::/38
  • 2403:a200:a000::/40
  • 2403:a200:a100::/48
  • 2403:a200:a101::/48
  • 2403:a200:a102::/47
  • 2403:a200:a104::/46
  • 2403:a200:a108::/45
  • 2403:a200:a110::/44
  • 2403:a200:a120::/43
  • 2403:a200:a140::/42
  • 2403:a200:a180::/42
  • 2403:a200:a1c0::/43
  • 2403:a200:a1e0::/44
  • 2403:a200:a1f0::/45
  • 2403:a200:a1f8::/46
  • 2403:a200:a1fc::/47
  • 2403:a200:a1fe::/48
  • 2403:a200:a200::/44
  • 2403:a200:a210::/44
  • 2403:a200:a220::/43
  • 2403:a200:a240::/42
  • 2403:a200:a280::/42
  • 2403:a200:a2c0::/43
  • 2403:a200:a2e0::/44
  • 2403:a200:a2f0::/45
  • 2403:a200:a2f8::/46
  • 2403:a200:a2fc::/47
  • 2403:a200:a2fe::/48
  • 2403:a200:a300::/41
  • 2403:a200:a380::/42
  • 2403:a200:a3c0::/43
  • 2403:a200:a3e0::/44
  • 2403:a200:a3f0::/45
  • 2403:a200:a3f8::/46
  • 2403:a200:a3fc::/47
  • 2403:a200:a3fe::/48
  • 2403:a200:a400::/38
  • 2403:a200:a800::/37
  • 2403:a200:b000::/36
  • 2403:a200:c000::/34

Similar-sized networks in China

ASNNameIPv4 addresses
AS59223#227 CT-Qinghai-IDC - CHINANET Qinghai province IDC network12,032
AS137753#228 JD - Beijing Jingdong Shangke Information Technology Co. Ltd.11,776
AS38381#229 travelsky - west wing no.157,dongsi west street Dongcheng, Beijing, China11,520
AS137735#231 CCBNET - China Construction Bank10,496
AS63581#232 GXRTVNET - GUANGXI RADIO & TELEVISION INFORMATION NETWORK CO.,LTD.10,240
AS142404#233 CHINANET-AS-AP - China Telecom10,240

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