SUBNET.IM

AS39974Altitude ISP LLC

United StatesRegistryARIN

At a glance

IPv4 prefixes

3

IPv6 prefixes

0

IPv4 addresses

768

IPv6 /64s

0

Upstream graph

The networks AS39974 is seen behind, one and two hops out, drawn from real AS paths.

AS39974Toward the internet core
Upstream graph for AS39974: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS39974Altitude ISP LLCThis networkAS1000LINK AMERICANAS3356Lumen (Level 3)AS7459Grande Communicat…AS13876FiberLight, LLCAS174Cogent Communicat…AS6453TATA Communicatio…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS1299Arelion (fka. Tel…AS3257GTT Communication…

Networks observed one and two hops upstream of AS39974 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

8

adjacent networks

Upstreams
450%
Peers
450%
Downstreams
00%

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

Upstreams of AS39974
NetworkCountryRelationshipPathsVantage pts
AS13876FiberLight, LLCUSPeer8080
AS7459Grande Communications Networks, LLCUSPeer8080
AS3356Lumen (Level 3)USPeer7979
AS1000LINK AMERICANUSPeer11

Prefixes

The largest blocks AS39974 originates, widest first.

Largest prefixes originated by AS39974
PrefixAddressesVisibility
66.118.50.0/2425680/80
66.118.51.0/2425680/80
66.187.199.0/2425680/80

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