Autonomous system
AS6802 UNICOM-B-AS NREN - Bulgaria
Education ARIN
Summary
BREN (Bulgarian Research and Education Network)
education research nren legacy
UNICOM-B-AS — the Bulgarian Research and Education Network Association (BREN), Bulgaria's national research and education network (NREN). The RIPE object describes it simply as "NREN - Bulgaria".
What it's used for
- National backbone connectivity for Bulgarian universities, research institutes and academic institutions, and their onward connection to the pan-European research network.
- It announces around 57 IPv4 prefixes, overwhelmingly drawn from the legacy
194.141.0.0/16Bulgarian academic block, plus IPv6.
Notable
- Institutional, not commercial: the prefixes are member institutions' campuses. BREN provides transit to its members but is not a general ISP.
- The
UNICOM-Bhandle is the network's original name from the early Bulgarian academic networking era and has never been changed.
Interesting
- BREN also supports BGP communities for its transit customers, which is a hint that Bulgarian academic institutions multihome through it much as commercial customers would through a carrier.
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
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Bulgarian Internet eXchange | Sofia, Bulgaria | 193.169.199.125 |
Transit providers
11 upstream, 8 downstream and 27 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS8262 | Evolink EAD | 1,900 |
| AS21320 | GEANT Vereniging | 841 |
| AS6939 | Hurricane Electric LLC | 368 |
| AS3303 | Swisscom (Schweiz) AG | 51 |
| AS8218 | Zayo Infrastructure France SA | 51 |
| AS8280 | SYNAPSECOM S.A. Provider of Telecommunications and Internet Services | 49 |
| AS208972 | GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI | 49 |
| AS8717 | A1 Bulgaria EAD | 37 |
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 39 prefixes · 65.54K addresses IPv6 22 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BG | Bulgaria | 61 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS6802- Registry name
- UNICOM-B-AS
- Registrant
- AS6802-MNT
- Abuse contact
- abuse@acad.bg
- Registered
- 1970-01-01
- Last changed
- 2024-07-12
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 59 valid, 0 with no ROA
- ROAs
- 64 authorising AS6802
- ASPA
- no ASPA record
- IRR
- 100% registered · 59 of 59 announcements
- Route objects
- 76 naming AS6802
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: 436 networks and 1,771 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