AS197451 VUTBR-AS Brno University of Technology

VUTBR-AS Brno University of Technology · registered in Czechia

IPv4 addresses66,81611 prefixes · 0.002% of announced IPv4

Rank in Czechia#15largest network in CZ by IPv4 space, of 570 · 0.81% of CZ

Rank worldwide#2,598of 79,396 networks with IPv4

IPv613 x /32 (851,971 x /48)5 prefixes

CountryCzechia599 ASNs registered there

Open AS197451 in ASN lookup Look up an IP in this network (147.229.0.1) All networks in Czechia

IPv4 prefixes

All 11 prefixes, in address order.

147.229.0.0/17
147.229.128.0/18
147.229.192.0/19
147.229.224.0/20
147.229.240.0/21
147.229.248.0/22
147.229.252.0/23
147.229.254.0/24
185.62.108.0/23
185.149.204.0/23
185.149.206.0/23

IPv6 prefixes

All 5 prefixes.

2001:67c:1220::/47
2001:67c:1222::/48
2a03:2e0::/32
2a03:2e4::/30
2a07:6bc0::/29

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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