asn.dev

Autonomous system

AS43712 OPENSYSTEMS-AS Open Systems Ltd.

Unclassified APNIC

IPv4 addresses 1.54K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly RU
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Open Systems Ltd.

Russian Federation · AI-generated

business russia small

OPENSYSTEMS-AS is held by Open Systems Ltd.

What it's used for

  • The address space carries corporate infrastructure, identified by the netname OPENSYSTEMS-NET and registrant Open Systems Ltd.
  • The AS announces 1536 IPv4 addresses across 2 prefixes with 1 observed neighbour, indicating a small, self-contained business network rather than a transit or large access provider.
  • Traffic from this AS consists of internal corporate endpoints and services for the Moscow-based limited liability company.

Notable

  • Registrants for both announced prefixes (91.204.104.0/22 and 91.195.128.0/23) match the AS holder, Open Systems Ltd.
  • The address inventory is compact, consisting of two small IPv4 blocks with no IPv6 presence.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS200442Kotsarev Alexey Evgenevich120

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 2 prefixes · 1.54K addresses IPv6 0 prefixes

CountryNamePrefixes
RURussian Federation2

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS43712
Registry name
OPENSYSTEMS-AS
Registrant
MNT-OPENSYSTEMS
Abuse contact
and@osystems.ru
Registered
2007-09-18
Last changed
2019-05-28
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS43712
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
9 naming AS43712

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: 448 networks and 1,851 prefixes, as published 2026-11-04. 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

Cross-check