subnet.im

AS131273CORE WINNER CO.,LIMITED

TaiwanRegistryAPNIC

As of 27th September 2026, AS131273 (CORE WINNER CO.,LIMITED), a network registered in Taiwan with APNIC, originates 4 IPv4 prefixes covering 1k addresses. By IPv4 address space that makes it the 35,818th-largest of the 79,523 networks we see originating IPv4, and the 136th-largest of 234 in Taiwan. It is seen behind 1 upstream network, most often AS4780 (Digital United Inc.), and in front of 1 downstream network. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 0% of its routes reach at least 90% of full-feed peers, and 4 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 AS131273 is seen behind, one and two hops out, drawn from real AS paths.

AS131273Toward the internet core
Upstream graph for AS131273: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS131273CORE WINNER CO.,L…This networkAS4780Digital United In…AS3491PCCW Global (HK) …AS9002RETN Limited

Networks observed one and two hops upstream of AS131273 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

9

adjacent networks

Upstreams
111%
Peers
778%
Downstreams
111%

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

Upstreams of AS131273
NetworkCountryRelationshipPathsVantage pts
AS4780Digital United Inc.TWPeer56981

Prefixes

The largest blocks AS131273 originates, widest first.

Largest prefixes originated by AS131273
PrefixAddressesVisibility
103.68.138.0/2425666/81
103.117.106.0/2425648/81
150.116.80.0/2425666/81
156.242.9.0/2425666/81

Routing health

How AS131273'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%4
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

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

Prefix sizes

IPv4 — 4 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Withdrawn103.161.79.0/2421st Sept 2026
  • Withdrawn103.166.81.0/2421st Sept 2026

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