SUBNET.IM

AS203997XTDef Limited

Hong Kong SAR ChinaRegistryRIPE NCCTypeEyeball

At a glance

IPv4 prefixes

6

IPv6 prefixes

2

IPv4 addresses

1.5k

IPv6 /64s

131k

Upstream graph

The networks AS203997 is seen behind, one and two hops out, drawn from real AS paths.

AS203997Toward the internet core
Upstream graph for AS203997: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS203997XTDef LimitedThis networkAS20473The Constant Comp…AS35661VIRTUA SYSTEMS SASAS40994Alwyzon (Hohl IT)AS57695Misaka Network, I…AS61138Zappie Host LLCAS2914NTT America, Inc.AS6939Hurricane Electri…AS3257GTT Communication…AS174Cogent Communicat…AS917Misaka Network, I…AS60068Datacamp Limited …AS37153Xneelo (Pty) Ltd

Networks observed one and two hops upstream of AS203997 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

10

adjacent networks

Upstreams
550%
Peers
550%
Downstreams
00%

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

Upstreams of AS203997
NetworkCountryRelationshipPathsVantage pts
AS40994Alwyzon (Hohl IT)ATPeer298140
AS61138Zappie Host LLCUSPeer141141
AS57695Misaka Network, Inc.USPeer8080
AS35661VIRTUA SYSTEMS SASFRPeer6060
AS20473The Constant Company, LLCUSPeer2020

Prefixes

The largest blocks AS203997 originates, widest first.

Largest prefixes originated by AS203997
PrefixAddressesVisibility
81.18.60.0/2425679/80
87.76.184.0/2425679/80
89.23.94.0/2425679/80
151.244.252.0/2425679/80
179.61.243.0/2425680/80
191.44.74.0/2425680/80
2a10:e8c0:4::/4865.5k × /6462/62
2a10:e8c0:43::/4865.5k × /6461/62

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