subnet.im

AS219207YIYUAN CHEN

ChinaRegistryRIPE NCC

As of 11th November 2026, AS219207 (YIYUAN CHEN), a network registered in China with RIPE NCC, originates 11 IPv6 prefixes. It is seen behind 1 upstream network, most often AS218868 (Hongning Intelligent International…). 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

0

IPv6 prefixes

11

IPv4 addresses

0

IPv6 /64s

4.9B

Upstream graph

The networks AS219207 is seen behind, one and two hops out, drawn from real AS paths.

AS219207Toward the internet core
Upstream graph for AS219207: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS219207YIYUAN CHENThis networkAS218868Hongning Intellig…AS203446SMARTNET Germany …AS213438ColocaTel Inc.

Networks observed one and two hops upstream of AS219207 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS219207
NetworkCountryRelationshipPathsVantage pts
AS218868Hongning Intelligent International LimitedHKPeer66962

Prefixes

The largest blocks AS219207 originates, widest first.

Largest prefixes originated by AS219207
PrefixAddressesVisibility
2a05:1086:8000::/332.1B × /6461/63
2a0c:e641::/332.1B × /6461/63
2a0a:d682:e000::/36268M × /6461/63
2a0e:4001:9800::/37134M × /6461/63
2a06:de07:f800::/3933.6M × /6461/63
2a09:3f00:4600::/3933.6M × /6461/63
2a0f:6280:7000::/3933.6M × /6461/63
2a0f:6280:7800::/3933.6M × /6461/63
2602:fa02:d00::/4016.8M × /6461/63
2a14:7581:5800::/4016.8M × /6459/63

Routing health

How AS219207'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%11
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%11
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 11 prefixes

  • /332.1B × /6418.2%2
  • /36268M × /649.1%1
  • /37134M × /649.1%1
  • /3933.6M × /6436.4%4
  • /4016.8M × /6418.2%2
  • /441M × /649.1%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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