Autonomous System

AS138421 China Unicom

ISPActiveChinaAPNIC

AS138421 (CU-CN-AS) is an ISP network operated by China Unicom in China, registered with APNIC. It has 212 IPv4 prefixes with 96,768 addresses and 37 IPv6 prefixes, which makes it the 2,385th largest of 82,558 active autonomous systems by IPv4 space.

IPv4 addresses96,768in 212 prefixes
IPv6 prefixes37≈ 6.4 × 10²⁶ addresses
Size rank#2,385of 82,558 active ASNs
Abuser scoreVery Low0.05% of its addresses flagged · method

Details

OrganizationChina Unicom
AS nameCU-CN-AS
Websitechinaunicom.cn
Country China (CN)
Network typeISP
RegistryAPNIC
Abuse contacthqs-ipabuse@chinaunicom.cn
Registered—
Last updated2023-10-21

IPv4 prefixes

212 prefixes · 96,768 addresses
NetworkAddressesFirst – last address
220.196.224.0/198,192220.196.224.0 – 220.196.255.255
112.65.240.0/204,096112.65.240.0 – 112.65.255.255
140.207.208.0/212,048140.207.208.0 – 140.207.215.255
140.207.216.0/212,048140.207.216.0 – 140.207.223.255
140.207.224.0/212,048140.207.224.0 – 140.207.231.255
220.196.240.0/212,048220.196.240.0 – 220.196.247.255
43.254.148.0/221,02443.254.148.0 – 43.254.151.255
103.68.128.0/221,024103.68.128.0 – 103.68.131.255
103.220.164.0/221,024103.220.164.0 – 103.220.167.255
112.64.112.0/221,024112.64.112.0 – 112.64.115.255
112.64.212.0/221,024112.64.212.0 – 112.64.215.255
112.65.228.0/221,024112.65.228.0 – 112.65.231.255
140.206.200.0/221,024140.206.200.0 – 140.206.203.255
140.206.212.0/221,024140.206.212.0 – 140.206.215.255
140.206.216.0/221,024140.206.216.0 – 140.206.219.255
140.206.240.0/221,024140.206.240.0 – 140.206.243.255
140.207.216.0/221,024140.207.216.0 – 140.207.219.255
140.207.220.0/221,024140.207.220.0 – 140.207.223.255
140.207.252.0/221,024140.207.252.0 – 140.207.255.255
203.166.160.0/221,024203.166.160.0 – 203.166.163.255
210.51.20.0/221,024210.51.20.0 – 210.51.23.255
210.51.36.0/221,024210.51.36.0 – 210.51.39.255
210.51.48.0/221,024210.51.48.0 – 210.51.51.255
220.196.92.0/221,024220.196.92.0 – 220.196.95.255
220.196.164.0/221,024220.196.164.0 – 220.196.167.255
The 25 largest of 212. The API and the database have all of them.

IPv6 prefixes

37 prefixes
  • 2408:80f1::/44
  • 2408:80f1:40::/44
  • 2408:80f1:70::/44
  • 2408:80f1:110::/44
  • 2408:80f1:120::/44
  • 2408:80f1:160::/44
  • 2408:80f1:170::/44
  • 2408:80f1:1c0::/44
  • 2408:80f1:1d0::/44
  • 2408:80f1:1e0::/44
  • 2408:80f1:220::/44
  • 2408:80f1:240::/44
  • 2408:870c::/44
  • 2408:870c:20::/44
  • 2408:870c:d0::/44
  • 2408:870c:e0::/44
  • 2408:870c:f0::/44
  • 2408:870c:150::/44
  • 2408:870c:2020::/44
  • 2408:870c:2030::/44
  • 2408:870c:2040::/44
  • 2408:870c:2050::/44
  • 2408:870c:2070::/44
  • 2408:870c:2080::/44
  • 2408:870c:2090::/44
The 25 largest of 37. The API and the database have all of them.

Query AS138421 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS138421&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS138421, with or without a key:

curl "https://api.ipapi.is/?q=220.196.224.1"

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