SUBNET.IM

AS63Massachusetts Institute of Technology

United StatesRegistryARIN

At a glance

IPv4 prefixes

6

IPv6 prefixes

0

IPv4 addresses

67.8k

IPv6 /64s

0

Upstream graph

The networks AS63 is seen behind, one and two hops out, drawn from real AS paths.

AS63Toward the internet core
Upstream graph for AS63: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS63Massachusetts Ins…This networkAS10578Harvard UniversityAS13789Unitas GlobalAS6939Hurricane Electri…AS11164Internet2 I2PXAS1828PacketFabric / Un…

Networks observed one and two hops upstream of AS63 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS63
NetworkCountryRelationshipPathsVantage pts
AS13789Unitas GlobalUSPeer45676
AS10578Harvard UniversityUSPeer244

Prefixes

The largest blocks AS63 originates, widest first.

Largest prefixes originated by AS63
PrefixAddressesVisibility
129.55.0.0/1665.5k80/80
192.5.136.0/221k80/80
192.5.140.0/2351280/80
129.55.201.0/2425680/80
192.26.149.0/2425680/80
192.26.150.0/2425680/80

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