Autonomous System
AS197451 Brno University of Technology
EducationActiveCzechiaRIPE
AS197451 (VUTBR-AS) is an education network operated by Brno University of Technology in Czechia, registered with RIPE. It has 8 IPv4 prefixes with 67,584 addresses and 4 IPv6 prefixes, which makes it the 3,187th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses67,584in 8 prefixes
IPv6 prefixes4≈ 1.0 × 10³⁰ addresses
Size rank#3,187of 82,200 active ASNs
Details
OrganizationBrno University of Technology
AS nameVUTBR-AS
Websitevut.cz
Country Czechia (CZ)
Network typeEducation
RegistryRIPE
Abuse contactabuse@vutbr.cz
Registered2010-12-08
Last updated2018-09-04
IPv4 prefixes
8 prefixes · 67,584 addresses| Network | Addresses | First – last address |
|---|---|---|
| 147.229.0.0/17 | 32,768 | 147.229.0.0 – 147.229.127.255 |
| 147.229.128.0/18 | 16,384 | 147.229.128.0 – 147.229.191.255 |
| 147.229.192.0/19 | 8,192 | 147.229.192.0 – 147.229.223.255 |
| 147.229.224.0/19 | 8,192 | 147.229.224.0 – 147.229.255.255 |
| 185.149.204.0/22 | 1,024 | 185.149.204.0 – 185.149.207.255 |
| 185.62.108.0/23 | 512 | 185.62.108.0 – 185.62.109.255 |
| 185.149.204.0/24 | 256 | 185.149.204.0 – 185.149.204.255 |
| 185.149.205.0/24 | 256 | 185.149.205.0 – 185.149.205.255 |
147.229.0.0/17 147.229.128.0/18 147.229.192.0/19 147.229.224.0/19 185.149.204.0/22 185.62.108.0/23 185.149.204.0/24 185.149.205.0/24
IPv6 prefixes
4 prefixes- 2a07:6bc0::/29
- 2a03:2e4::/30
- 2a03:2e0::/32
- 2001:67c:1220::/46
2a07:6bc0::/29 2a03:2e4::/30 2a03:2e0::/32 2001:67c:1220::/46
Query AS197451 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS197451&key=YOUR_API_KEY"Any address in its prefixes resolves to AS197451, with or without a key:
curl "https://api.ipapi.is/?q=147.229.0.1"Largest networks in Czechia
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