SUBNET.IM

AS4043Montana Internet Corporation

United StatesRegistryARIN

At a glance

IPv4 prefixes

4

IPv6 prefixes

1

IPv4 addresses

25.3k

IPv6 /64s

4.3B

Upstream graph

The networks AS4043 is seen behind, one and two hops out, drawn from real AS paths.

AS4043Toward the internet core
Upstream graph for AS4043: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS4043Montana Internet …This networkAS293ESnetAS6461Zayo BandwidthAS6939Hurricane Electri…AS18106Viewqwest Pte LtdAS49544i3D.net B.VAS6453TATA Communicatio…AS6667Elisa OyjAS32590Valve CorporationAS20130Depaul UniversityAS215859Hetzner Cloud - S…AS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS4043 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

33

adjacent networks

Upstreams
927%
Peers
2370%
Downstreams
13%

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

Upstreams of AS4043
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer409135
AS6939Hurricane Electric LLCUSPeer207
AS18106Viewqwest Pte LtdSGPeer82
AS49544i3D.net B.VNLPeer51
AS24482SG.GSSGPeer41
AS58511Swoop (Anycast Global Backbone)AUPeer41
AS293ESnetUSPeer41
AS3130RGnet OUEEPeer41
AS9002RETN LimitedGBPeer41

Prefixes

The largest blocks AS4043 originates, widest first.

Largest prefixes originated by AS4043
PrefixAddressesVisibility
206.127.64.0/1816.4k80/80
209.161.128.0/198.2k80/80
205.207.148.0/2351280/80
199.5.172.0/2425680/80
2607:f6b8::/324.3B × /6462/62

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