SUBNET.IM

AS63777National Institutes of Natural Sciences National Astronomical Observatory of JAPAN

JapanRegistryAPNIC

At a glance

IPv4 prefixes

1

IPv6 prefixes

0

IPv4 addresses

65.5k

IPv6 /64s

0

Upstream graph

The networks AS63777 is seen behind, one and two hops out, drawn from real AS paths.

AS63777Toward the internet core
Upstream graph for AS63777: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS63777National Institut…This networkAS2907Science Informati…AS2497Internet Initiati…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS63777 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 AS63777
NetworkCountryRelationshipPathsVantage pts
AS2907Science Information NetworkJPPeer7979

Prefixes

The largest blocks AS63777 originates, widest first.

Largest prefixes originated by AS63777
PrefixAddressesVisibility
133.40.0.0/1665.5k79/80

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