Autonomous System

AS17638 CHINATELECOM TJ AS AP

ISPActiveChinaAPNIC

AS17638 (CHINATELECOM-TJ-AS-AP) is an ISP network operated by CHINATELECOM TJ AS AP in China, registered with APNIC. It has 511 IPv4 prefixes with 1,139,712 addresses and 19 IPv6 prefixes, which makes it the 404th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses1,139,712in 511 prefixes
IPv6 prefixes19≈ 5.5 × 10²⁹ addresses
Size rank#404of 82,200 active ASNs
Abuser scoreLow0.08% of its addresses flagged · method

Details

OrganizationCHINATELECOM TJ AS AP
AS nameCHINATELECOM-TJ-AS-AP
Websitechinatelecom.com.cn
Country China (CN)
Network typeISP
RegistryAPNIC
Abuse contactanti-spam@chinatelecom.cn
Registered—
Last updated2020-05-14

IPv4 prefixes

511 prefixes · 1,139,712 addresses
NetworkAddressesFirst – last address
42.80.0.0/15131,07242.80.0.0 – 42.81.255.255
123.150.0.0/15131,072123.150.0.0 – 123.151.255.255
180.212.0.0/15131,072180.212.0.0 – 180.213.255.255
42.122.0.0/1665,53642.122.0.0 – 42.122.255.255
106.47.0.0/1665,536106.47.0.0 – 106.47.255.255
123.150.0.0/1665,536123.150.0.0 – 123.150.255.255
123.151.0.0/1665,536123.151.0.0 – 123.151.255.255
36.106.0.0/1732,76836.106.0.0 – 36.106.127.255
36.106.128.0/1732,76836.106.128.0 – 36.106.255.255
123.151.0.0/1732,768123.151.0.0 – 123.151.127.255
42.122.64.0/1816,38442.122.64.0 – 42.122.127.255
221.238.0.0/1816,384221.238.0.0 – 221.238.63.255
221.238.64.0/1816,384221.238.64.0 – 221.238.127.255
221.238.128.0/1816,384221.238.128.0 – 221.238.191.255
221.238.192.0/1816,384221.238.192.0 – 221.238.255.255
221.239.0.0/1816,384221.239.0.0 – 221.239.63.255
221.239.64.0/1816,384221.239.64.0 – 221.239.127.255
123.150.16.0/204,096123.150.16.0 – 123.150.31.255
125.213.32.0/204,096125.213.32.0 – 125.213.47.255
180.212.64.0/204,096180.212.64.0 – 180.212.79.255
219.150.32.0/204,096219.150.32.0 – 219.150.47.255
219.150.48.0/204,096219.150.48.0 – 219.150.63.255
219.150.64.0/204,096219.150.64.0 – 219.150.79.255
219.150.80.0/204,096219.150.80.0 – 219.150.95.255
219.150.96.0/204,096219.150.96.0 – 219.150.111.255
The 25 largest of 511. The API and the database have all of them.

IPv6 prefixes

19 prefixes
  • 240e:94::/31
  • 240e:328::/32
  • 240e:628::/32
  • 240e:929::/32
  • 240e:5::/33
  • 240e:45::/33
  • 240e:628::/33
  • 240e:628:8000::/33
  • 240e:983:900::/40
  • 240e:108:1290::/44
  • 240e:45:1::/48
  • 240e:108:4161::/48
  • 240e:108:4166::/48
  • 240e:108:4961::/48
  • 240e:628:5::/48
  • 240e:983:900::/48
  • 240e:983:901::/48
  • 240e:983:902::/48
  • 240e:983:903::/48

Query AS17638 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=AS17638&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS17638, with or without a key:

curl "https://api.ipapi.is/?q=42.80.0.1"

Largest networks in China

AS4134 CHINANET BACKBONE111,758,336 IPv4 addressesAS4837 CHINA UNICOM China169 Backbone59,316,736 IPv4 addressesAS9808 China Mobile Communications Group Co., Ltd56,417,536 IPv4 addressesAS4538 China Education and Research Network Center42,262,016 IPv4 addressesAS37963 Hangzhou Alibaba Advertising Co.,Ltd.20,428,288 IPv4 addressesAS4808 China Unicom Beijing Province Network13,949,952 IPv4 addresses