Autonomous System
AS9916 National Yang Ming Chiao Tung University
EducationActiveTaiwanAPNIC
AS9916 (NCTU-TW) is an education network operated by National Yang Ming Chiao Tung University in Taiwan, registered with APNIC. It has 9 IPv4 prefixes with 93,696 addresses and 1 IPv6 prefix, which makes it the 2,429th largest of 82,141 active autonomous systems by IPv4 space.
IPv4 addresses93,696in 9 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#2,429of 82,141 active ASNs
Details
OrganizationNational Yang Ming Chiao Tung University
AS nameNCTU-TW
Websitenycu.edu.tw
Country Taiwan (TW)
Network typeEducation
RegistryAPNIC
Abuse contactnoc@mail.moe.gov.tw
Registered—
Last updated2025-11-06
IPv4 prefixes
9 prefixes · 93,696 addresses| Network | Addresses | First – last address |
|---|---|---|
| 140.113.0.0/16 | 65,536 | 140.113.0.0 – 140.113.255.255 |
| 120.126.32.0/19 | 8,192 | 120.126.32.0 – 120.126.63.255 |
| 120.126.64.0/19 | 8,192 | 120.126.64.0 – 120.126.95.255 |
| 120.126.96.0/20 | 4,096 | 120.126.96.0 – 120.126.111.255 |
| 140.129.64.0/20 | 4,096 | 140.129.64.0 – 140.129.79.255 |
| 140.129.56.0/21 | 2,048 | 140.129.56.0 – 140.129.63.255 |
| 140.129.52.0/22 | 1,024 | 140.129.52.0 – 140.129.55.255 |
| 140.129.51.0/24 | 256 | 140.129.51.0 – 140.129.51.255 |
| 140.129.80.0/24 | 256 | 140.129.80.0 – 140.129.80.255 |
140.113.0.0/16 120.126.32.0/19 120.126.64.0/19 120.126.96.0/20 140.129.64.0/20 140.129.56.0/21 140.129.52.0/22 140.129.51.0/24 140.129.80.0/24
IPv6 prefixes
1 prefix- 2001:f18::/32
2001:f18::/32
Query AS9916 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=AS9916&key=YOUR_API_KEY"Any address in its prefixes resolves to AS9916, with or without a key:
curl "https://api.ipapi.is/?q=140.113.0.1"Largest networks in Taiwan
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