Autonomous System

AS151823 China Telecom

ISPActiveChinaAPNIC

AS151823 (CT-Centralsouth-China-IIP) is an ISP network operated by China Telecom in China, registered with APNIC. It has 15 IPv4 prefixes with 37,632 addresses and 5 IPv6 prefixes, which makes it the 4,901st largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses37,632in 15 prefixes
IPv6 prefixes5≈ 6.5 × 10²⁷ addresses
Size rank#4,901of 82,200 active ASNs
Abuser scoreVery Low0.02% of its addresses flagged · method

Details

OrganizationChina Telecom
AS nameCT-Centralsouth-China-IIP
Websitechinatelecom.com.cn
Country China (CN)
Network typeISP
RegistryAPNIC
Abuse contactanti-spam@chinatelecom.cn
Registered—
Last updated2023-09-25

IPv4 prefixes

15 prefixes · 37,632 addresses
NetworkAddressesFirst – last address
175.12.0.0/1816,384175.12.0.0 – 175.12.63.255
175.12.64.0/1816,384175.12.64.0 – 175.12.127.255
175.12.64.0/221,024175.12.64.0 – 175.12.67.255
175.12.96.0/221,024175.12.96.0 – 175.12.99.255
175.12.58.0/24256175.12.58.0 – 175.12.58.255
175.12.59.0/24256175.12.59.0 – 175.12.59.255
175.12.60.0/24256175.12.60.0 – 175.12.60.255
175.12.61.0/24256175.12.61.0 – 175.12.61.255
175.12.62.0/24256175.12.62.0 – 175.12.62.255
175.12.63.0/24256175.12.63.0 – 175.12.63.255
175.12.105.0/24256175.12.105.0 – 175.12.105.255
175.12.106.0/24256175.12.106.0 – 175.12.106.255
175.12.107.0/24256175.12.107.0 – 175.12.107.255
175.12.108.0/24256175.12.108.0 – 175.12.108.255
175.12.109.0/24256175.12.109.0 – 175.12.109.255

IPv6 prefixes

5 prefixes
  • 240e:96a:4000::/36
  • 240e:106:aa00::/39
  • 240e:982:9b00::/40
  • 240e:982:9d00::/40
  • 240e:982:9e00::/40

Query AS151823 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=AS151823&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS151823, with or without a key:

curl "https://api.ipapi.is/?q=175.12.0.1"

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