subnet.im

AS401339YAMATO CLOUD LLC

United StatesRegistryARIN

As of 27th September 2026, AS401339 (YAMATO CLOUD LLC), a network registered in the United States with ARIN, originates 14 IPv4 prefixes covering 4.6k addresses. By IPv4 address space that makes it the 16,155th-largest of the 79,523 networks we see originating IPv4, and the 4,558th-largest of 18,427 in the United States. It is seen behind 3 upstream networks, most often AS131642 (Pittqiao Network Information Co.,Ltd.) and AS142616 (Misaka Network, Inc.). 79% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 64% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

14

IPv6 prefixes

0

IPv4 addresses

4.6k

IPv6 /64s

0

Upstream graph

The networks AS401339 is seen behind, one and two hops out, drawn from real AS paths.

AS401339Toward the internet core
Upstream graph for AS401339: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS401339YAMATO CLOUD LLCThis networkAS23961Misaka Network, I…AS131642Pittqiao Network …AS142616Misaka Network, I…AS137409GSL Networks Pty …AS6939Hurricane Electri…AS60068Datacamp Limited …AS134823Sky Digital Co., …

Networks observed one and two hops upstream of AS401339 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS401339
NetworkCountryRelationshipPathsVantage pts
AS131642Pittqiao Network Information Co.,Ltd.TWPeer74181
AS142616Misaka Network, Inc.JPPeer12358
AS23961Misaka Network, Inc.USPeer6767

Prefixes

The largest blocks AS401339 originates, widest first.

Largest prefixes originated by AS401339
PrefixAddressesVisibility
14.137.238.0/2351281/81
74.1.206.0/2351281/81
207.174.132.0/2351280/81
207.174.134.0/2351281/81
14.137.238.0/2425656/81
14.137.239.0/2425656/81
23.188.72.0/2425680/81
23.188.168.0/2425680/81
74.1.206.0/2425681/81
74.1.207.0/2425681/81

Routing health

How AS401339'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

  • Valid78.6%11
  • Invalid0.0%0
  • No ROA21.4%3

Propagation

  • Globally propagated90% of full-feed peers or more64.3%9
  • Partially propagated40% to 90%21.4%3
  • Seen by few peersUnder 40%14.3%2

Prefix sizes

IPv4 — 14 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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