AS28949 — TUSNET-AS Technical University of Sofia

AS28949 announces 1 IPv4 prefixes covering 4,096 addresses and 0 IPv6 prefixes.

About this network

TUSNET-AS is operated by Technical University of Sofia.

What it's used for

• The address space carries the university's network, identified by the netname BG-TUSNET and registrant Technical University of Sofia.
• The AS announces 4096 IPv4 addresses within a single prefix (81.161.240.0/20) and has 2 observed neighbours, a ratio consistent with an on-site institutional network rather than a transit provider.

Notable

• The RDAP registrant Technical University of Sofia aligns directly with the AS holder and the registry name TUSNET-AS.
• The inventory consists of a single contiguous IPv4 block with no announced IPv6 prefixes, reflecting a compact, self-contained address estate.

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

Announced prefixes

• 81.161.240.0/20

Upstream networks

• AS8717 A1 Bulgaria EAD
• AS6802 Bulgarian Research and Education Network Association (BREN)

Adjacent networks

• AS8717 A1 Bulgaria EAD
• AS6802 Bulgarian Research and Education Network Association (BREN)

Routing security

• RPKI: 17 valid, 0 invalid and 0 not-found announcements; 17 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 19 route objects.
• Listed in as-sets: AS-BTC-UP, AS-ISTF, AS-RETN-ACTUAL-V4, AS-SPNET, AS8717:AS-A1BG.