AS63901 CYCORE

CYCORE-AS - CYCORE · registered in Taiwan

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Taiwan#188largest network in TW by IPv4 space, of 237 · <0.01% of TW

Rank worldwide#53,102of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryTaiwan288 ASNs registered there

Open AS63901 in ASN lookup Look up an IP in this network (103.28.18.1) All networks in Taiwan

IPv4 prefixes

All 1 prefix, in address order.

103.28.18.0/23

Similar-sized networks in Taiwan

ASNNameIPv4 addresses

AS63894#185 SMCI-AS-TW - Super Micro Computer, Inc.512

AS63895#186 cdn - Charmway Limited512

AS63899#187 CHUAN-CHAN-NET-A - National Taiwan University of Science and Technology512

AS63910#189 CLARK-AS - Clark Technology Ltd.512

AS131595#190 KTCFE-NET - Kingston Technology Fareast Corp.512

AS131606#191 CHIEFCLOUDIAAS-A - Chief Telecom Inc.512

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