subnet.im

AS978Shamrock Trading Corporation

United StatesRegistryARIN

As of 13th October 2026, AS978 (Shamrock Trading Corporation), a network registered in the United States with ARIN, originates 3 IPv4 prefixes covering 768 addresses. By IPv4 address space that makes it the 44,924th-largest of the 79,585 networks we see originating IPv4, and the 9,385th-largest of 18,443 in the United States. It is seen behind 2 upstream networks, most often AS3356 (Lumen (Level 3)) and AS174 (Cogent Communications, LLC). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

3

IPv6 prefixes

0

IPv4 addresses

768

IPv6 /64s

0

Upstream graph

The networks AS978 is seen behind, one and two hops out, drawn from real AS paths.

AS978Toward the internet core
Upstream graph for AS978: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS978Shamrock Trading …This networkAS174Cogent Communicat…AS3356Lumen (Level 3)AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…

Networks observed one and two hops upstream of AS978 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 AS978
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer13846
AS174Cogent Communications, LLCUSPeer10234

Prefixes

The largest blocks AS978 originates, widest first.

Largest prefixes originated by AS978
PrefixAddressesVisibility
134.65.204.0/2425680/81
134.65.205.0/2425680/81
134.65.206.0/2425680/81

Routing health

How AS978'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

  • Valid100.0%3
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

Recent changes

Announcements that started or stopped since 13th Sept 2026.

No announcement by AS978 started or stopped in this period.

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