Brno University of Technology
AS197451 is Brno University of Technology (vutbr.cz). It announces 66,816 IPv4 addresses in 8 prefixes, and 4 IPv6 prefixes.
Czechia· RIPE· allocated 2010-12-08· education
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- Czechia66,816 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- VUTBR-AS
- name
- Brno University of Technology
- org
- ORG-BUOT1-RIPE
- org name
- Brno University of Technology
- org address
- Antoninska 548/1, 60190, Brno, CZECH REPUBLIC
- org country
- CZ
- country
- CZ
- source
- ripe
- status
- ASSIGNED
- created
- 2010-12-08
- updated
- 2018-09-04
- remarks
- Imported from: / rt:197451:100 - Exchange points + direct peering / rt:197451:101 - NIX.CZ / rt:197451:103 - SIX.SK / rt:197451:104 - NIX.SK / rt:197451:105 - BR-IX / rt:197451:106 - Peering.cz / rt:197451:199 - direct peering / rt:197451:200 - Transit upstreams / rt:197451:201 - Liberty Global / rt:197451:202 - T-Mobile / rt:197451:203 - CESNET / rt:197451:300 - Customers / rt:197451:301 - Internal networks / Export to: / rt:197451:100x - exchange points + direct peering / rt:197451:1000 - shorten path to
- maintainer
- RIPE-NCC-END-MNT|VUTBR-MNT
- abuse name
- Brno University of Technology - Backbone Admins
- abuse email
- abuse@vutbr.cz
- abuse phone
- +420 723047787
- abuse kind
- role
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- VPN IP94watchguard0.14%
- geonix, proxyseller, mangoproxy0.16%
- None here
- None here
- 0.00%
- None here
- Hosting IP9,98414.94%
- None here
- None here
- None here
- SSH IP7991.20%
- SMTP IP440.07%
- 0.08%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 147.229.0.0/17 | Czechia | valid | 19 | 2026-10-02 |
| 147.229.128.0/18 | Czechia | valid | 19 | 2026-10-02 |
| 147.229.192.0/19 | Czechia | valid | 19 | 2026-10-02 |
| 147.229.224.0/19 | Czechia | valid | 17 | 2026-10-02 |
| 185.62.108.0/23 | Czechia | valid | 17 | 2026-10-02 |
| 185.149.204.0/22 | Czechia | not found | 17 | 2026-10-02 |
| 185.149.204.0/24 | Czechia | not found | 17 | 2026-10-02 |
| 185.149.205.0/24 | Czechia | not found | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
Test the real build first.
An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.