AS18047 — NTHU-TW - National Tsing-Hua University

AS18047 announces 2 IPv4 prefixes covering 73,728 addresses and 0 IPv6 prefixes.

About this network

The AS handle NTHU-TW is held by National Tsing Hua University.

What it's used for

• The address space carries university infrastructure, evidenced by reverse DNS entries like 1680.nd.nthu.edu.tw and netnames T-NTHU.EDU.TW-NET and TANET-NET.
• The AS announces 73728 IPv4 addresses across 2 prefixes while maintaining only 3 observed neighbours, a ratio indicative of an access or eyeball network rather than a transit provider.

Notable

• Registrants include unknown for the primary block and IRT-TANET-TW for the secondary block, with netnames reflecting both the university and the Taiwan Academic Network (TANET).
• The inventory consists of two distinct IPv4 prefixes: 140.114.0.0/16 and 120.127.160.0/19, with no IPv6 prefixes currently announced.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 120.127.160.0/19
• 140.114.0.0/16

Upstream networks

• AS9505 Taiwan Internet Gateway
• AS18423 RAID Networks Co., Ltd.
• AS7539 National Center for High-performance Computing
• AS9264 Academia Sinica

Adjacent networks

• AS9505 Taiwan Internet Gateway
• AS18423 RAID Networks Co., Ltd.
• AS7539 National Center for High-performance Computing
• AS9264 Academia Sinica

Routing security

• RPKI: 2 valid, 0 invalid and 0 not-found announcements; 2 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 5 route objects.
• Listed in as-sets: AS-63529-AS-IMPORT-AS9505, AS-ASNET, AS-TFN-DOMESTIC, AS-TFN-DOMESTIC, AS-TWIG, AS1659:AS-TANET, AS293:AS-FROM-SINGAREN-TO-ESNET, AS63529:AS-63529-AS-IMPORT-AS9505, AS7539:AS-TWAREN, AS9264:AS-PARTNER-A.