AS48514 — CSB Stiftelsen Chalmers Studenthem

AS48514 announces 2 IPv4 prefixes covering 17,408 addresses and 1 IPv6 prefixes.

About this network

CSB is operated by Stiftelsen Chalmers Studenthem, the student housing foundation for Chalmers University of Technology.

What it's used for

• The address space carries student residential traffic, evidenced by reverse DNS names such as cust-95-80-47-254.csbnet.se and net-95-80-16-0-20.csbnet.se.
• The AS announces 17,408 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with only 2 observed neighbours, indicating a local access network rather than a transit provider.
• Traffic consists of student and guest researcher internet access within the Chalmers campus housing estate.

Notable

• Registrants for both announced prefixes are listed as "Chalmers Studentbostader's Networking Group; Stiftelsen Chalmers Studenthem", matching the AS holder.
• The inventory is split between a large /18 block (95.80.0.0/18) and a smaller /22 block (45.134.56.0/22), with the latter acquired later as indicated by the netname date 20190726.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 45.134.56.0/22
• 95.80.0.0/18
• 2a02:9a0::/32

Upstream networks

• AS1653 Vetenskapsradet / SUNET
• AS61282 BrainMill AB

Adjacent networks

• AS1653 Vetenskapsradet / SUNET
• AS61282 BrainMill AB

Routing security

• RPKI: 0 valid, 0 invalid and 6 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 7 route objects.
• Listed in as-sets: AS-BAHNHOF, AS-CSBNET, AS-TRANSROUTE-QUICKFIX, AS61282:AS-NEANET.