AS197451

Name: AS197451 — Brno University of Technology
Creator: ipdex

Brno University of Technology Education registered in Czechia

8IPv4 prefixes

4IPv6 prefixes

67%RPKI-valid

#2,256AS Rank

327/327RIS visibility

#51Rank in Czechia

2010-12-08Allocated

Brno University of Technology (AS197451) — Education, registered in Czechia. announces 8 IPv4 prefixes + 4 IPv6 prefixes. Rank in Czechia: #51. Allocated: 2010-12-08.

IPv4 8IPv6 4

Announced prefixes · 12

v4 147.229.0.0/17 valid
v4 147.229.128.0/18 valid
v4 147.229.192.0/19 valid
v4 147.229.224.0/19 valid
v4 185.149.204.0/22 unknown
v4 185.149.204.0/24 unknown
v4 185.149.205.0/24 unknown
v4 185.62.108.0/23 valid
v6 2001:67c:1220::/46 valid
v6 2a03:2e0::/32 valid
v6 2a03:2e4::/30 valid
v6 2a07:6bc0::/29 unknown

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 8 IPv4 · 4 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	12
2026-06-13	12

Internet Exchanges · 1

BR-IX Brno 200 Gbps

AS topology · Customer cone 13

Providers · 3

AS16019 Vodafone Czech Republic a.s.
AS15935 ha-vel internet s.r.o.
AS2852 CESNET z.s.p.o.

Customers · 8

AS204860 NetX Networks a.s.
AS207167 mapnet IT services s.r.o.
AS210604 Pernix systems s.r.o.
AS34222 ZONER a.s.
AS201263 Brno University of Technology
AS201931 LBnet.cz s.r.o.

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