subnet.im

AS57371Mass-Net LLC

RussiaRegistryRIPE NCC

As of 11th November 2026, AS57371 (Mass-Net LLC), a network registered in Russia with RIPE NCC, originates 3 IPv4 prefixes covering 2.8k addresses. By IPv4 address space that makes it the 22,792nd-largest of the 80,743 networks we see originating IPv4, and the 1,326th-largest of 4,983 in Russia. It is seen behind 1 upstream network, most often AS58067 (JOINT-STOCK COMPANY "MOSCOW ENERGY…). 67% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

3

IPv6 prefixes

0

IPv4 addresses

2.8k

IPv6 /64s

0

Upstream graph

The networks AS57371 is seen behind, one and two hops out, drawn from real AS paths.

AS57371Toward the internet core
Upstream graph for AS57371: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS57371Mass-Net LLCThis networkAS58067JOINT-STOCK COMPA…AS3216PJSC VimpelcomAS12389PJSC Rostelecom

Networks observed one and two hops upstream of AS57371 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS57371
NetworkCountryRelationshipPathsVantage pts
AS58067JOINT-STOCK COMPANY "MOSCOW ENERGY COMMUNICATION NODE"RUPeer22876

Prefixes

The largest blocks AS57371 originates, widest first.

Largest prefixes originated by AS57371
PrefixAddressesVisibility
93.171.144.0/212k76/76
194.169.84.0/2351276/76
185.200.189.0/2425676/76

Routing health

How AS57371's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid66.7%2
  • Invalid0.0%0
  • No ROA33.3%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS57371 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.