AS7539 National Center for High-performance Computing

TWAREN-TW - National Center for High-performance Computing · registered in Taiwan

IPv4 addresses85,50418 prefixes · 0.003% of announced IPv4

Rank in Taiwan#27largest network in TW by IPv4 space, of 237 · 0.26% of TW

Rank worldwide#2,073of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryTaiwan288 ASNs registered there

Open AS7539 in ASN lookup Look up an IP in this network (103.124.72.1) All networks in Taiwan

IPv4 prefixes

All 18 prefixes, in address order.

103.124.72.0/23
103.124.74.0/23
103.160.220.0/23
140.110.0.0/17
140.110.128.0/18
140.110.192.0/20
140.110.208.0/21
140.110.216.0/21
140.110.224.0/19
203.145.200.0/21
203.145.208.0/20
211.73.64.0/21
211.73.72.0/24
211.73.73.0/24
211.73.74.0/23
211.73.76.0/22
211.73.80.0/20
211.79.48.0/20

IPv6 prefixes

All 1 prefix.

2001:e10::/32

Similar-sized networks in Taiwan

ASNNameIPv4 addresses

AS18419#24 DADA-AS-TW - DaDa Broadband LTD.116,736

AS24154#25 APBT-AS-TW - Asia Pacific Broadband Fixed Lines Co., Ltd.98,816

AS9916#26 NCTU-TW - National Yang Ming Chiao Tung University93,696

AS131602#28 HYA - Hsin Yeong An Cable TV Co., Ltd.84,736

AS17716#29 NTU-TW - National Taiwan University76,800

AS18047#30 NTHU-TW - National Tsing-Hua University73,728

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources