asn.dev

Autonomous system

AS57371 MASSNET-AS

Unclassified APNIC

IPv4 addresses 2.82K 3 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

Mass-Net LLC

Russian Federation · AI-generated

isp residential russia

MASSNET-AS is operated by Mass-Net LLC.

What it's used for

  • The address space carries residential and business internet access, evidenced by netnames MASSNET-NET, RU-MASSNET-20201117, and MASSNET all registered to Mass-Net LLC.
  • The AS announces 2816 IPv4 addresses across 3 prefixes with only 1 observed routing neighbour, a ratio characteristic of an access or eyeball network rather than a transit provider.
  • Traffic from this AS consists of subscriber internet access for customers in the Russian Federation, specifically in the Respublika Saha region.

Notable

  • All registrants for the announced prefixes agree with the announcer, consistently listing Mass-Net LLC as the holder.
  • The address inventory is compact, consisting of three distinct IPv4 blocks with no IPv6 prefixes announced.

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
AS58067JOINT-STOCK COMPANY "MOSCOW ENERGY COMMUNICATION NODE"183

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 3 prefixes · 2.82K addresses IPv6 0 prefixes

CountryNamePrefixes
RURussian Federation3

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS57371
Registry name
MASSNET-AS
Registrant
MNT-MASSNET
Abuse contact
mail@mass-net.ru
Registered
2017-05-15
Last changed
2024-12-12
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
67% valid · 2 valid, 1 with no ROA
ROAs
2 authorising AS57371
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
5 naming AS57371

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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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