$ query “AS2841” --type=asn → 1 result(s)
AS2841 · CHALMERS
Chalmers University of Technology AB
AS2841 is operated by Chalmers University of Technology AB and serves as an educational/research stub network, registered in Sweden. The system announces a respectable 67 584 IPv4 addresses, including a /16. The bulk of its IP address space is in Sweden. No IPv6 support — it's 2026, just saying.
Basic Information
- Country
- 🇸🇪 Sweden
- Category
- Education/Research
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- April 29, 2026
- Last Seen
- May 18, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 8 / 8
- IPv6 Prefixes (raw / aggregated)
- 0 / 0
- IPv4 Addresses
- 67 584
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Geolocated Countries
- 🇸🇪 Sweden (133 376 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 1 upstream providing transit
- Degree
- 1 unique BGP neighbor
- Reach
- 0 networks in customer cone
Upstream Providers (1)
- AS1653 — SUNET
Prefix Lists
IPv4 Prefixes (8 total)
- 129.16.0.0/16 (65 536 addresses (/16 prefix))
- 192.36.224.0/23 (512 addresses (/23 prefix))
- 192.5.50.0/24 (256 addresses (/24 prefix))
- 192.36.111.0/24 (256 addresses (/24 prefix))
- 192.36.185.0/24 (256 addresses (/24 prefix))
- 192.36.245.0/24 (256 addresses (/24 prefix))
- 192.71.1.0/24 (256 addresses (/24 prefix))
- 192.71.154.0/24 (256 addresses (/24 prefix))