SUBNET.IM

AS21837Opera Software Americas LLC

United StatesRegistryARIN

At a glance

IPv4 prefixes

10

IPv6 prefixes

2

IPv4 addresses

5.9k

IPv6 /64s

131k

Upstream graph

The networks AS21837 is seen behind, one and two hops out, drawn from real AS paths.

AS21837Toward the internet core
Upstream graph for AS21837: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21837Opera Software Am…This networkAS174Cogent Communicat…AS6461Zayo BandwidthAS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS6667Elisa OyjAS32590Valve CorporationAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS21837 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

9

adjacent networks

Upstreams
333%
Peers
556%
Downstreams
111%

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

Upstreams of AS21837
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer585125
AS174Cogent Communications, LLCUSPeer25160
AS6461Zayo BandwidthUSPeer22486

Prefixes

The largest blocks AS21837 originates, widest first.

Largest prefixes originated by AS21837
PrefixAddressesVisibility
107.167.104.0/212k80/80
107.167.96.0/221k79/80
107.167.116.0/221k80/80
107.167.100.0/2425680/80
107.167.102.0/2425679/80
107.167.103.0/2425679/80
107.167.122.0/2425680/80
107.167.123.0/2425680/80
107.167.125.0/2425679/80
107.167.126.0/2425680/80

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