$ query “AS15744” --type=asn → 1 result(s)
AS15744 · SILWEB-AS-COM
Silesian University of Technology Computer Centre
AS15744 is owned by Silesian University of Technology Computer Centre and is a mid-size transit provider, based in Poland. The system announces a respectable 45 056 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in Poland.
Basic Information
- Country
- 🇵🇱 Poland
- Category
- Education/Research
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- March 04, 2026
- Last Seen
- June 26, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 6 / 6
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 45 056
- Largest IPv4 Prefix
- /18 (16 384 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇵🇱 Poland (53 248 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Peers
- 1 network exchanging traffic without transit
- Downstream Customers
- 7 downstreams buying transit
- Unclassified
- 3 unclassified BGP neighbors
- Degree
- 13 unique BGP neighbors
- Reach
- 22 networks in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (6 total)
- 83.230.0.0/18 (16 384 addresses (/18 prefix))
- 195.82.160.0/19 (8 192 addresses (/19 prefix))
- 212.106.128.0/19 (8 192 addresses (/19 prefix))
- 83.230.80.0/20 (4 096 addresses (/20 prefix))
- 212.106.160.0/20 (4 096 addresses (/20 prefix))
- 213.227.64.0/20 (4 096 addresses (/20 prefix))
IPv6 Prefixes (1 total)
- 2a01:1df::/32