asn.dev

Autonomous system

AS47204 MCS-AS

Unclassified RIPE

IPv4 addresses 2.05K 7 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly RU
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

MCS LLC

Russian Federation · AI-generated

business russia ipv4

MCS-AS is operated by MCS LLC.

What it's used for

  • The address space is registered under netnames such as RU-MSC-20230929, RU-MSC-20240729, and RU-MCS, with registrants consistently listed as MCS LLC.
  • The AS announces 2048 IPv4 addresses across 7 prefixes and maintains 3 observed neighbours, a ratio indicative of a small-scale business or internal corporate network rather than a large access provider.
  • Traffic from this AS consists of internal corporate endpoints and services hosted by MCS LLC, a company based in Kostroma, Russian Federation.

Notable

  • Registrants for six of the seven announced prefixes are MCS LLC, matching the AS holder; the prefix 45.131.48.0/23 is registered to IPX; IPX - FZCO with netname AE-IX-20190718.
  • The inventory consists of seven distinct IPv4 prefixes, including a /23 block and six /24 blocks, with no IPv6 prefixes in the inventory.

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

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS43201Telematika LLC299
AS39728Likhno Dmitriy trading as Luganet221

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, 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 7 prefixes · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
RURussian Federation7

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS47204
Registry name
MCS-AS
Registrant
IP-RIPE
Abuse contact
office@mcs.ooo
Registered
2023-10-03
Last changed
2026-04-14
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 8 valid, 0 with no ROA
ROAs
8 authorising AS47204
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
8 naming AS47204

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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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