AS18420 National Central University

NCU-TW - National Central University · registered in Taiwan

IPv4 addresses65,5361 prefixes · 0.002% of announced IPv4

Rank in Taiwan#35largest network in TW by IPv4 space, of 237 · 0.20% of TW

Rank worldwide#3,205of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryTaiwan288 ASNs registered there

Open AS18420 in ASN lookup Look up an IP in this network (140.115.0.1) All networks in Taiwan

IPv4 prefixes

All 1 prefix, in address order.

140.115.0.0/16

Similar-sized networks in Taiwan

ASNNameIPv4 addresses

AS18422#32 ITRINET-AS-TW - Industrial Technology Research Institute69,632

AS7535#33 TISNET - TISNET Technology Inc.65,536

AS17713#34 NSYSU-TW - Ministry of Education Computer Center65,536

AS24163#36 UBBNET-AS-TW - UNION BROADBAND NETWORK64,256

AS24165#37 UBBNET-AS-TW - UNION BROADBAND NETWORK64,256

AS38851#38 TNET-NET - TNET Communication Inc. 10F., No.78, Sec. 2, Chongxin Rd., Sanchong Dist.,New Taipei City, Taiwan (R.O.C Taiwan 241)62,208

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