AS38839 CSPTEK LTD. CO.

CSPTEK-AS-TW - CSPTEK LTD. CO. · registered in Taiwan

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Taiwan#170largest network in TW by IPv4 space, of 237 · <0.01% of TW

Rank worldwide#47,485of 79,396 networks with IPv4

IPv64,096 x /481 prefixes

CountryTaiwan288 ASNs registered there

Open AS38839 in ASN lookup Look up an IP in this network (103.159.176.1) All networks in Taiwan

IPv4 prefixes

All 1 prefix, in address order.

103.159.176.0/23

IPv6 prefixes

All 1 prefix.

2406:d7c0:f000::/36

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AS142046#172 M1033-INFO-AS-TW - 1033 Network Information Co.512

AS152619#173 VERYFAST-AS-TW - Very Fast Network LTD512

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