Autonomous System

AS18047 National Tsing-Hua University

EducationActiveTaiwanAPNIC

AS18047 (NTHU-TW) is an education network operated by National Tsing-Hua University in Taiwan, registered with APNIC. It has 2 IPv4 prefixes with 73,728 addresses, which makes it the 2,871st largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses73,728in 2 prefixes
IPv6 prefixes0none
Size rank#2,871of 82,200 active ASNs
Abuser scoreLow0.06% of its addresses flagged · method

Details

OrganizationNational Tsing-Hua University
AS nameNTHU-TW
Websitenthu.edu.tw
Country Taiwan (TW)
Network typeEducation
RegistryAPNIC
Abuse contactnoc@mail.moe.gov.tw
Registered—
Last updated2025-11-06

IPv4 prefixes

2 prefixes · 73,728 addresses
NetworkAddressesFirst – last address
140.114.0.0/1665,536140.114.0.0 – 140.114.255.255
120.127.160.0/198,192120.127.160.0 – 120.127.191.255

IPv6 prefixes

No IPv6 prefixes.

Query AS18047 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=AS18047&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS18047, with or without a key:

curl "https://api.ipapi.is/?q=140.114.0.1"

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