AS204113 CSIS Security Information Service

CSIS Security Information Service · registered in Czechia

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in Czechia#548largest network in CZ by IPv4 space, of 570 · <0.01% of CZ

Rank worldwide#73,887of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryCzechia599 ASNs registered there

Open AS204113 in ASN lookup Look up an IP in this network (193.138.106.1) All networks in Czechia

IPv4 prefixes

All 1 prefix, in address order.

193.138.106.0/24

Similar-sized networks in Czechia

ASNNameIPv4 addresses

AS202073#545 ABS-ACLOUD-CLIENTS1 Itego a.s.256

AS202131#546 Wave-net ISP Alliance a.s.256

AS202857#547 CZ-AS INIZIO Internet Media s.r.o.256

AS204183#549 Omnivery-EU Omnivery s.r.o.256

AS204917#550 MiJa-AS Mi-Ja Javornik s.r.o.256

AS205026#551 WVG-CLOUD-AS wvg solution s.r.o.256

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