Autonomous system
AS12615 GCN-AS GCN AD - Sofia, Bulgaria
Unclassified RIPE
Summary
Global Communication Net
isp hosting transit
36 scattered announcements including one block the registry itself manages and one registered to a London company.
What it's used for
- Internet access and hosting in Sofia. 14,848 addresses in 36 IPv4 prefixes, one IPv6 prefix, and 104 observed BGP neighbours.
Notable
87.246.6.0/23carries the netnameRIPE-NCC-MANAGED-ADDRESS-BLOCK.87.246.12.0/22is netnameM247-LTD-London, withGLOBALAXS NOCas its contact.83.222.178.0/23isCKYLINK10_GCN.- The company's own blocks are dated
BG-GCN-20050825,BG-GCN-20070702andBG-GCN-20090827. - The 36 announcements average around 400 addresses each, mostly
/23s and/24s spread across five separate/8s. - Eighteen sampled addresses were queried and none returned a name.
Interesting
- A netname reading
RIPE-NCC-MANAGED-ADDRESS-BLOCKmeans the registry is holding the record itself rather than a member holding it. That happens to space that was reclaimed, is in dispute, or was left behind when a member ceased to exist. Somebody is still announcing it, which is a different question from who is entitled to. - A London company's netname on a Bulgarian network's block is the ordinary machinery of the address market: blocks are leased and sublet, and the registry entry keeps naming the party who holds the paperwork long after the routing has moved on.
- Thirty-six pieces for fifteen thousand addresses is what an inventory assembled from many small acquisitions looks like. None of it aggregates, so all 36 routes travel to every router on the Internet.
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 3 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| NetIX | Sofia, Bulgaria | 185.1.226.212 |
| Bulgarian Internet eXchange | Sofia, Bulgaria | 193.169.198.156 |
| Balkan Internet Exchange | Sofia, Bulgaria | 185.1.30.16 |
Transit providers
24 upstream, 26 downstream and 69 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 36 prefixes · 14.59K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BG | Bulgaria | 37 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12615- Registry name
- GCN-AS
- Registrant
- LIR-GCN-MNT
- Abuse contact
- abuse@gcn.bg
- Registered
- 2004-04-21
- Last changed
- 2024-11-20
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 22% valid · 11 valid, 38 with no ROA
- ROAs
- 13 authorising AS12615
- ASPA
- no ASPA record
- IRR
- 84% registered · 41 of 49 announcements 1 other origin
- Route objects
- 56 naming AS12615
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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