SUBNET.IM

AS668DoD High Performance Computing (Defense Research and Engineering Network)

United StatesRegistryARIN

At a glance

IPv4 prefixes

193

IPv6 prefixes

1

IPv4 addresses

2.6M

IPv6 /64s

4.3B

Upstream graph

The networks AS668 is seen behind, one and two hops out, drawn from real AS paths.

AS668Toward the internet core
Upstream graph for AS668: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS668DoD High Performa…This networkAS293ESnetAS701Verizon BusinessAS2153CENICAS2914NTT America, Inc.AS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS2152CENIC - CalRENAS16552Tiggee LLCAS49544i3D.net B.VAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS668 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

75

adjacent networks

Upstreams
68%
Peers
4256%
Downstreams
2736%

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

Upstreams of AS668
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer21,790139
AS2914NTT America, Inc.USPeer1,42925
AS701Verizon BusinessUSPeer73146
AS2153CENICUSPeer2831
AS293ESnetUSPeer2811
AS11537Internet2USPeer11

Prefixes

All 194

The largest blocks AS668 originates, widest first.

Largest prefixes originated by AS668
PrefixAddressesVisibility
6.4.0.0/1665.5k80/80
128.132.0.0/1665.5k80/80
129.92.0.0/1665.5k80/80
129.229.0.0/1665.5k80/80
130.109.0.0/1665.5k80/80
130.163.0.0/1665.5k80/80
131.120.0.0/1665.5k80/80
131.121.0.0/1665.5k80/80
131.122.0.0/1665.5k80/80
131.214.0.0/1665.5k80/80

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