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AS4637Telstra International Limited

Hong Kong SAR ChinaRegistryAPNICTypeCarrier

As of 26th September 2026, AS4637 (Telstra International Limited), a transit carrier registered in Hong Kong SAR China with APNIC, originates 667 IPv4 prefixes covering 1.4M addresses and 104 IPv6 prefixes. By IPv4 address space that makes it the 373rd-largest of the 79,480 networks we see originating IPv4, and the 7th-largest of 734 in Hong Kong SAR China. It is seen behind 70 upstream networks, most often AS32590 (Valve Corporation) and AS16552 (Tiggee LLC), and in front of 530 downstream networks. 93% of its announcements have a valid RPKI ROA; 2 are RPKI-invalid. 90% of its routes reach at least 90% of full-feed peers, and 3 prefixes are also originated by another network.

At a glance

IPv4 prefixes

667

IPv6 prefixes

104

IPv4 addresses

1.4M

IPv6 /64s

21.5B

Upstream graph

The networks AS4637 is seen behind, one and two hops out, drawn from real AS paths.

AS4637Toward the internet core
Upstream graph for AS4637: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS4637Telstra Internati…This networkAS5413Wavenet LimitedAS6939Hurricane Electri…AS16552Tiggee LLCAS32590Valve CorporationAS35280F5 Networks SARLAS3356Lumen (Level 3)AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS2914NTT America, Inc.AS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS4637 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

1,275

adjacent networks

Upstreams
705%
Peers
67553%
Downstreams
53042%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 70.

Upstreams of AS4637
NetworkCountryRelationshipPathsVantage pts
AS32590Valve CorporationUSPeer538,8462
AS16552Tiggee LLCUSPeer146,2842
AS6939Hurricane Electric LLCUSPeer89,69267
AS5413Wavenet LimitedGBPeer64,2582
AS35280F5 Networks SARLFRPeer57,4686
AS4775Globe TelecomsPHPeer56,64750
AS13030Init7 (Switzerland) Ltd.CHPeer52,3855
AS9002RETN LimitedGBPeer39,55913
AS37271Workonline Communications(Pty) LtdZAPeer39,1082
AS3257GTT Communications Inc.USPeer38,12635

Prefixes

All 771

The largest blocks AS4637 originates, widest first.

Largest prefixes originated by AS4637
PrefixAddressesVisibility
195.152.0.0/15131k81/81
13.142.0.0/1665.5k80/81
134.159.0.0/1665.5k81/81
146.101.0.0/1665.5k81/81
154.32.0.0/1665.5k81/81
42.99.128.0/1732.8k79/81
202.84.128.0/1732.8k81/81
61.14.128.0/1816.4k80/81
61.87.128.0/1816.4k81/81
120.138.192.0/1816.4k81/81

Routing health

How AS4637'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

  • Valid93.1%718
  • Invalid0.3%2
  • No ROA6.6%51

Propagation

  • Globally propagated90% of full-feed peers or more89.9%693
  • Partially propagated40% to 90%0.5%4
  • Seen by few peersUnder 40%9.6%74

Prefix sizes

IPv4 — 667 prefixes

IPv6 — 104 prefixes

  • /324.3B × /644.8%5
  • /4865.5k × /6495.2%99

Recent changes

Announcements that started or stopped since 27th Aug 2026.

14 announced and 2 withdrawn in all; the most recent are shown.

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