Autonomous system
AS8745 AS-BG-BAS
Education ARIN
Summary
Bulgarian Academy of Sciences
education research legacy
The Bulgarian Academy of Sciences (AS-BG-BAS) — Bulgaria's national scientific academy, founded in 1869 and the umbrella for the country's state research institutes. Roughly 17,000 IPv4 addresses plus an IPv6 /32.
What it's used for
- Connectivity for the Academy's institutes, laboratories and administration. The reverse DNS is straightforward academic naming under
bas.bg, with per-institute subdomains (mechanics, biophysics and the rest) and the Academy's border routers and mail servers sitting in the same space. - The AS aggregates the institutes rather than giving each its own; a researcher's workstation and the Academy's core routers share one address plan.
Notable
- Institutional, not eyeball. A national academy's address space carries staff, labs and scientific computing, so it looks like a large campus network: named hosts, no dynamic pools, and only a couple of upstreams.
- An IPv6
/32for a research organisation of this size reflects the academic networks' early and generous IPv6 adoption — Europe's research community was deploying it while commercial ISPs were still ignoring it.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 17.41K addresses IPv6 17 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BG | Bulgaria | 20 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS8745- Registry name
- AS-BG-BAS
- Registrant
- BASNET-MNT
- Abuse contact
- abuse@bas.bg
- Registered
- 1970-01-01
- Last changed
- 2017-11-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 83% valid · 5 valid, 0 with no ROA 1 RPKI-invalid
- ROAs
- 6 authorising AS8745
- ASPA
- no ASPA record
- IRR
- 83% registered · 5 of 6 announcements
- Route objects
- 69 naming AS8745
Reputation
Classification and threat
Education University, school or national research and education network.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 440 networks and 1,773 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere