SUBNET.IM

AS2721CULR, LLC

United StatesRegistryARIN

At a glance

IPv4 prefixes

5

IPv6 prefixes

1

IPv4 addresses

9.2k

IPv6 /64s

4.3B

Upstream graph

The networks AS2721 is seen behind, one and two hops out, drawn from real AS paths.

AS2721Toward the internet core
Upstream graph for AS2721: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS2721CULR, LLCThis networkAS174Cogent Communicat…AS2711Spirit Communicat…AS2722CULR, LLCAS3257GTT Communication…AS11164Internet2 I2PXAS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS10490Georgia Institute…AS6667Elisa OyjAS2497Internet Initiati…AS2152CENIC - CalREN

Networks observed one and two hops upstream of AS2721 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

21

adjacent networks

Upstreams
629%
Peers
1152%
Downstreams
419%

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

Upstreams of AS2721
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer54870
AS11164Internet2 I2PXUSPeer27662
AS3257GTT Communications Inc.USPeer11443
AS2722CULR, LLCUSPeer5519
AS2711Spirit CommunicationsUSPeer4428
AS11537Internet2USPeer342

Prefixes

The largest blocks AS2721 originates, widest first.

Largest prefixes originated by AS2721
PrefixAddressesVisibility
205.186.224.0/198.2k79/80
192.188.108.0/2425641/80
205.186.46.0/2425632/80
205.186.47.0/2425634/80
205.186.226.0/2425679/80
2606:c000::/324.3B × /6431/62

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