subnet.im

AS9505Taiwan Internet Gateway

TaiwanRegistryAPNICTypeEyeball

As of 28th September 2026, AS9505 (Taiwan Internet Gateway), an access network registered in Taiwan with APNIC, originates 36 IPv4 prefixes covering 31.7k addresses and 9 IPv6 prefixes. By IPv4 address space that makes it the 5,555th-largest of the 79,544 networks we see originating IPv4, and the 52nd-largest of 234 in Taiwan. It is seen behind 46 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3356 (Lumen (Level 3)), and in front of 33 downstream networks. 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

36

IPv6 prefixes

9

IPv4 addresses

31.7k

IPv6 /64s

9.2B

Upstream graph

The networks AS9505 is seen behind, one and two hops out, drawn from real AS paths.

AS9505Toward the internet core
Upstream graph for AS9505: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS9505Taiwan Internet G…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2497Internet Initiati…AS3356Lumen (Level 3)AS132337AxclusiveAS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS9505 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

317

adjacent networks

Upstreams
4615%
Peers
23875%
Downstreams
3310%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 46.

Upstreams of AS9505
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer8,11179
AS3356Lumen (Level 3)USPeer4,87090
AS132337AxclusiveSGPeer2,9192
AS174Cogent Communications, LLCUSPeer2,39541
AS2497Internet Initiative Japan Inc.JPPeer2,1256
AS7713PT Telkom Indonesia TbkIDPeer2,0364
AS24482SG.GSSGPeer1,7092
AS199524Gcore S.A.LUPeer1,3362
AS18106Viewqwest Pte LtdSGPeer1,3334
AS38880Micron21 Datacentre Pty LtdAUPeer1,3022

Prefixes

All 45

The largest blocks AS9505 originates, widest first.

Largest prefixes originated by AS9505
PrefixAddressesVisibility
175.41.48.0/204.1k82/82
175.111.224.0/204.1k82/82
203.78.176.0/204.1k82/82
203.160.224.0/204.1k82/82
66.171.112.0/212k82/82
175.111.240.0/212k82/82
208.70.200.0/212k82/82
220.128.48.0/212k82/82
175.41.48.0/2425682/82
175.41.49.0/2425682/82

Routing health

How AS9505'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%45
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%45
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 36 prefixes

IPv6 — 9 prefixes

  • /324.3B × /6422.2%2
  • /35537M × /6411.1%1
  • /4016.8M × /6466.7%6

Recent changes

Announcements that started or stopped since 29th Aug 2026.

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