$ query “AS214757” --type=asn → 1 result(s)
AS214757 · JAKUB-KRSA
Jakub Krsa
AS214757 is run by Jakub Krsa and is an educational/research access provider, registered in Czechia since 2024. The system announces 256 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in the Netherlands. This AS has recently updated its prefix announcements.
- Top 5% — Top 5% of all autonomous systems by reach and degree
Basic Information
- Country
- 🇨🇿 Czechia
- Category
- Education/Research
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- June 06, 2024
- Last Changed
- September 01, 2026
- Last Seen
- September 06, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 1 / 1
- IPv6 Prefixes (raw / aggregated)
- 14 / 9
- IPv4 Addresses
- 256
- Largest IPv4 Prefix
- /24 (256 addresses)
- Largest IPv6 Prefix
- /43
- Geolocated Countries
- 🇳🇱 Netherlands (512 IPs)
- Prefix Changed
- September 07, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 3 upstreams providing transit
- Peers
- 257 networks exchanging traffic without transit
- Downstream Customers
- 2 downstreams buying transit
- Unclassified
- 29 unclassified BGP neighbors
- Degree
- 291 unique BGP neighbors
- Reach
- 11 networks in customer cone
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (1 total)
- 169.128.49.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (14 total)
- 2a14:6f44:1000::/43
- 2a05:dfc3:f800::/44
- 2a14:6f44:1020::/44
- 2a14:6f44:1040::/44
- 2a14:6f44:1104::/46
- 2a14:6f44:1102::/47
- 2a0a:6044:a1e0::/48
- 2a14:6f44:1101::/48
- 2a14:6f45:b00b::/48