subnet.im

AS38047Taiwan Telecom

United StatesRegistryARIN

As of 24th October 2026, AS38047 (Taiwan Telecom), a network registered in the United States with ARIN, originates 18 IPv4 prefixes covering 4.6k addresses and 12 IPv6 prefixes. By IPv4 address space that makes it the 16,168th-largest of the 79,664 networks we see originating IPv4, and the 4,561st-largest of 18,488 in the United States. It is seen behind 12 upstream networks, most often AS20473 (The Constant Company, LLC) and AS3491 (PCCW Global (HK) Ltd.), 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

18

IPv6 prefixes

12

IPv4 addresses

4.6k

IPv6 /64s

4.3B

Upstream graph

The networks AS38047 is seen behind, one and two hops out, drawn from real AS paths.

AS38047Toward the internet core
Upstream graph for AS38047: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS38047Taiwan TelecomThis networkAS3491PCCW Global (HK) …AS6939Hurricane Electri…AS17408AboveNet Communic…AS20473The Constant Comp…AS134823Sky Digital Co., …AS24516Virtutel Pty LtdAS58511Swoop (Anycast Gl…AS20130Depaul UniversityAS15412Flag Telecom UK L…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS38047 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

43

adjacent networks

Upstreams
1228%
Peers
3070%
Downstreams
12%

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

Upstreams of AS38047
NetworkCountryRelationshipPathsVantage pts
AS20473The Constant Company, LLCUSPeer912139
AS3491PCCW Global (HK) Ltd.HKPeer79076
AS134823Sky Digital Co., Ltd.TWPeer661100
AS17408AboveNet Communications TaiwanTWPeer28579
AS6939Hurricane Electric LLCUSPeer25267
AS1299Arelion (fka. Telia Carrier)SEPeer18213
AS4635HKIX Route ServersHKPeer846
AS18106Viewqwest Pte LtdSGPeer282
AS132337AxclusiveSGPeer161
AS24482SG.GSSGPeer162

Prefixes

All 30

The largest blocks AS38047 originates, widest first.

Largest prefixes originated by AS38047
PrefixAddressesVisibility
103.106.52.0/2425676/76
103.106.53.0/2425676/76
103.106.54.0/2425676/76
103.106.55.0/2425676/76
103.123.100.0/2425676/76
103.123.101.0/2425676/76
103.123.102.0/2425676/76
103.123.103.0/2425676/76
103.133.152.0/2425676/76
103.133.154.0/2425676/76

Routing health

How AS38047'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%30
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%30
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 18 prefixes

IPv6 — 12 prefixes

  • /324.3B × /648.3%1
  • /4016.8M × /648.3%1
  • /4865.5k × /6483.3%10

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS38047 started or stopped in this period.

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