SUBNET.IM

AS131881National Medical Center

South KoreaRegistryAPNIC

At a glance

IPv4 prefixes

1

IPv6 prefixes

0

IPv4 addresses

64

IPv6 /64s

0

Upstream graph

The networks AS131881 is seen behind, one and two hops out, drawn from real AS paths.

AS131881Toward the internet core
Upstream graph for AS131881: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS131881National Medical …This networkAS4766Korea TelecomAS6939Hurricane Electri…AS132337Axclusive

Networks observed one and two hops upstream of AS131881 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 AS131881
NetworkCountryRelationshipPathsVantage pts
AS4766Korea TelecomKRPeer33

Prefixes

The largest blocks AS131881 originates, widest first.

Largest prefixes originated by AS131881
PrefixAddressesVisibility
121.128.9.128/26643/80

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