subnet.im

AS199203CHEN ZHI-HAN

TaiwanRegistryRIPE NCCTypeEyeball

As of 27th September 2026, AS199203 (CHEN ZHI-HAN), an access network registered in Taiwan with RIPE NCC, originates 1 IPv6 prefix. It is seen behind 3 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS142046 (1033 Network Information Co.), and in front of 1 downstream network. 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

1

IPv4 addresses

0

IPv6 /64s

1M

Upstream graph

The networks AS199203 is seen behind, one and two hops out, drawn from real AS paths.

AS199203Toward the internet core
Upstream graph for AS199203: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS199203CHEN ZHI-HANThis networkAS6939Hurricane Electri…AS24482SG.GSAS1420461033 Network Info…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS6453TATA Communicatio…AS38623Metfone (Viettel …AS150766CoCoDigit Ltd

Networks observed one and two hops upstream of AS199203 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

14

adjacent networks

Upstreams
321%
Peers
1071%
Downstreams
17%

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

Upstreams of AS199203
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer6060
AS1420461033 Network Information Co.TWPeer42
AS24482SG.GSSGPeer11

Prefixes

The largest blocks AS199203 originates, widest first.

Largest prefixes originated by AS199203
PrefixAddressesVisibility
2401:e3e0:900::/441M × /6463/64

Routing health

How AS199203'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%1
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%1
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 1 prefixes

  • /441M × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS199203 started or stopped in this period.

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