$ query “AS197451” --type=asn → 1 result(s)
AS197451 — VUTBR-AS
Brno University of Technology
AS197451 is a mid-size transit provider operated by Brno University of Technology, registered in Czechia since 2010. The network announces a respectable 67 072 IPv4 addresses, including a /16. Supports IPv6.
Basic Information
- Country
- 🇨🇿 Czechia
- Category
- Education/Research
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- December 08, 2010
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 8 / 3
- IPv6 Prefixes (raw / aggregated)
- 4 / 4
- IPv4 Addresses
- 67 072
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇨🇿 CZ (4 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 67 072 total (0.00%)
Connectivity Summary
- Upstream Providers
- 3 upstream autonomous systems providing transit
- Peers
- 0 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 8 downstream autonomous systems buying transit
- Degree
- 11 unique BGP neighbors (providers + customers + peers)
- Reach
- 12 — customer cone size measuring network influence
- Degree Rank
- #10 371
- Reach Rank
- #2 935
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (8 total)
- 147.229.0.0/16 (65 536 addresses)
- 185.149.204.0/22 (1 024 addresses)
- 185.62.108.0/23 (512 addresses)
IPv6 Prefixes (4 total)
- 2a07:6bc0::/29
- 2a03:2e4::/30
- 2a03:2e0::/32
- 2001:67c:1220::/46