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AS4637Telstra International Limited

Hong Kong SAR ChinaRegistryAPNICTypeCarrier

As of 10th November 2026, AS4637 (Telstra International Limited), a transit carrier registered in Hong Kong SAR China with APNIC, originates 671 IPv4 prefixes covering 1.4M addresses and 105 IPv6 prefixes. By IPv4 address space that makes it the 373rd-largest of the 80,723 networks we see originating IPv4, and the 7th-largest of 759 in Hong Kong SAR China. It is seen behind 71 upstream networks, most often AS32590 (Valve Corporation) and AS16552 (Tiggee LLC), and in front of 533 downstream networks. 93% of its announcements have a valid RPKI ROA; 3 are RPKI-invalid. 89% 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

671

IPv6 prefixes

105

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 networkAS4775Globe TelecomsAS5413Wavenet LimitedAS6939Hurricane Electri…AS16552Tiggee LLCAS32590Valve CorporationAS3356Lumen (Level 3)AS1299Arelion (fka. Tel…AS20130Depaul UniversityAS132337AxclusiveAS2914NTT America, Inc.

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

1,277

adjacent networks

Upstreams
716%
Peers
67353%
Downstreams
53342%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 71.

Upstreams of AS4637
NetworkCountryRelationshipPathsVantage pts
AS32590Valve CorporationUSPeer627,1362
AS16552Tiggee LLCUSPeer130,7412
AS6939Hurricane Electric LLCUSPeer84,51964
AS5413Wavenet LimitedGBPeer72,5702
AS4775Globe TelecomsPHPeer64,54649
AS35280F5 Networks SARLFRPeer53,8126
AS13030Init7 (Switzerland) Ltd.CHPeer48,6715
AS37271Workonline Communications(Pty) LtdZAPeer39,6422
AS1299Arelion (fka. Telia Carrier)SEPeer31,48265
AS2497Internet Initiative Japan Inc.JPPeer30,9266

Prefixes

All 776

The largest blocks AS4637 originates, widest first.

Largest prefixes originated by AS4637
PrefixAddressesVisibility
195.152.0.0/15131k76/76
13.142.0.0/1665.5k76/76
134.159.0.0/1665.5k76/76
146.101.0.0/1665.5k76/76
154.32.0.0/1665.5k76/76
42.99.128.0/1732.8k76/76
202.84.128.0/1732.8k76/76
61.14.128.0/1816.4k76/76
61.87.128.0/1816.4k76/76
120.138.192.0/1816.4k76/76

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

  • Valid93.0%722
  • Invalid0.4%3
  • No ROA6.6%51

Propagation

  • Globally propagated90% of full-feed peers or more89.3%693
  • Partially propagated40% to 90%0.5%4
  • Seen by few peersUnder 40%10.2%79

Prefix sizes

IPv4 — 671 prefixes

IPv6 — 105 prefixes

  • /324.3B × /644.8%5
  • /4865.5k × /6495.2%100

Recent changes

Announcements that started or stopped since 11th Oct 2026.

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