subnet.im

AS16905LEARN

United StatesRegistryARIN

As of 22nd October 2026, AS16905 (LEARN), a network registered in the United States with ARIN, originates 4 IPv4 prefixes covering 1k addresses. By IPv4 address space that makes it the 35,844th-largest of the 79,663 networks we see originating IPv4, and the 8,134th-largest of 18,476 in the United States. It is seen behind 2 upstream networks, most often AS11537 (Internet2) and AS293 (ESnet), and in front of 30 downstream networks. None of its announcements have a valid RPKI ROA. 0% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

4

IPv6 prefixes

0

IPv4 addresses

1k

IPv6 /64s

0

Upstream graph

The networks AS16905 is seen behind, one and two hops out, drawn from real AS paths.

AS16905Toward the internet core
Upstream graph for AS16905: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS16905LEARNThis networkAS293ESnetAS11537Internet2AS2914NTT America, Inc.AS6939Hurricane Electri…AS2153CENIC

Networks observed one and two hops upstream of AS16905 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

64

adjacent networks

Upstreams
23%
Peers
3250%
Downstreams
3047%

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

Upstreams of AS16905
NetworkCountryRelationshipPathsVantage pts
AS11537Internet2USPeer2181
AS293ESnetUSPeer2131

Prefixes

The largest blocks AS16905 originates, widest first.

Largest prefixes originated by AS16905
PrefixAddressesVisibility
74.200.150.0/242562/77
74.200.179.0/242562/77
74.200.186.0/242562/77
74.200.187.0/242562/77

Routing health

How AS16905's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%4

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%100.0%4

Prefix sizes

IPv4 — 4 prefixes

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS16905 started or stopped in this period.

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