81.161.253.0/24
IPv4 prefix announced by AS28949 Technical University of Sofia
unknown RPKI
VALID announced
1 Recorded origin
Routing
- Recorded origin
- AS28949 Technical University of Sofia unknown
- Observed origin (RIS)
- AS28949 TUSNET-AS Technical University of Sofia
- Country
- Bulgaria
RPKI: rpki.cloudflare.com · 2026-06-17 · Routing: RIPEstat · 2026-06-18