subnet.im

AS149020WebHorizon Internet Services

SingaporeRegistryAPNICTypeContent

As of 10th November 2026, AS149020 (WebHorizon Internet Services), a content network registered in Singapore with APNIC, originates 18 IPv4 prefixes covering 4.9k addresses and 16 IPv6 prefixes. By IPv4 address space that makes it the 16,135th-largest of the 80,733 networks we see originating IPv4, and the 110th-largest of 450 in Singapore. It is seen behind 5 upstream networks, most often AS137409 (GSL Networks Pty LTD) and AS35133 (Eranium B.V.), and in front of 4 downstream networks. 88% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 94% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

18

IPv6 prefixes

16

IPv4 addresses

4.9k

IPv6 /64s

1.2B

Upstream graph

The networks AS149020 is seen behind, one and two hops out, drawn from real AS paths.

AS149020Toward the internet core
Upstream graph for AS149020: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS149020WebHorizon Intern…This networkAS21859Zenlayer IncAS35133Eranium B.V.AS56655Gigahost ASAS58678Intech Online Pri…AS137409GSL Networks Pty …AS2914NTT America, Inc.AS4229Zenlayer IncAS6830Liberty Global Eu…AS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS8529Zain Omantel Inte…AS32590Valve Corporation

Networks observed one and two hops upstream of AS149020 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

18

adjacent networks

Upstreams
528%
Peers
950%
Downstreams
422%

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

Upstreams of AS149020
NetworkCountryRelationshipPathsVantage pts
AS137409GSL Networks Pty LTDAUPeer1,805138
AS35133Eranium B.V.NLPeer591139
AS21859Zenlayer IncUSPeer220138
AS56655Gigahost ASNOPeer139139
AS58678Intech Online Private LimitedINPeer12462

Prefixes

All 34

The largest blocks AS149020 originates, widest first.

Largest prefixes originated by AS149020
PrefixAddressesVisibility
43.243.248.0/2351276/76
23.131.24.0/2425676/76
45.142.105.0/2425676/76
103.170.216.0/2425676/76
103.170.217.0/2425676/76
103.179.44.0/2425676/76
103.179.45.0/2425676/76
131.143.252.0/2425676/76
160.187.141.0/242561/76
160.191.77.0/2425676/76

Routing health

How AS149020'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

  • Valid88.2%30
  • Invalid0.0%0
  • No ROA11.8%4

Propagation

  • Globally propagated90% of full-feed peers or more94.1%32
  • Partially propagated40% to 90%2.9%1
  • Seen by few peersUnder 40%2.9%1

Prefix sizes

IPv4 — 18 prefixes

IPv6 — 16 prefixes

  • /36268M × /6425.0%4
  • /4016.8M × /6437.5%6
  • /441M × /6418.8%3
  • /4865.5k × /6418.8%3

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.