asn.dev

Autonomous system

AS51981 FINSTAR-AS

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly RU
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Finstar Bank

Russian Federation · AI-generated

bank business corporate

The AS handle FINSTAR-AS is held by PJSC Finstar Bank.

What it's used for

  • The address space carries corporate infrastructure, indicated by the netname SIAB-NET and registrant PJSC Finstar Bank.
  • The network announces 256 IPv4 addresses across 1 prefix with 3 observed neighbours, a ratio consistent with a small internal corporate estate rather than a transit or access provider.
  • Traffic from this AS consists of internal bank operations, office workers, and business endpoints associated with the financial institution.

Notable

  • Registrants align with the announcer, listing PJSC Finstar Bank and MTS backbone NOC for the prefix 91.220.218.0/24.
  • The address inventory consists of a single /24 block, representing a compact and self-contained corporate network.

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

3 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3216PJSC "Vimpelcom"36
AS8359MTS PJSC12
AS48399Svyaz VSD LLC11

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-30, 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 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
RURussian Federation1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51981
Registry name
FINSTAR-AS
Registrant
MTU-NOC
Abuse contact
abuse@mtu.ru
Registered
2010-12-09
Last changed
2025-12-09
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS51981
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS51981

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 1,849 prefixes, as published 2026-10-30. 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