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AS45102Alibaba (US) Technology Co., Ltd.

United StatesRegistryAPNICTypeContent

As of 27th September 2026, AS45102 (Alibaba (US) Technology Co., Ltd.), a content network registered in the United States with APNIC, originates 1,156 IPv4 prefixes covering 11.1M addresses and 120 IPv6 prefixes. By IPv4 address space that makes it the 66th-largest of the 79,523 networks we see originating IPv4, and the 22nd-largest of 18,427 in the United States. It is seen behind 87 upstream networks, most often AS6453 (TATA Communications (America) Inc) and AS3491 (PCCW Global (HK) Ltd.), and in front of 1 downstream network. 99% of its announcements have a valid RPKI ROA; 9 are RPKI-invalid. 94% of its routes reach at least 90% of full-feed peers, and 68 prefixes are also originated by another network.

At a glance

IPv4 prefixes

1,156

IPv6 prefixes

120

IPv4 addresses

11.1M

IPv6 /64s

208B

Upstream graph

The networks AS45102 is seen behind, one and two hops out, drawn from real AS paths.

AS45102Toward the internet core
Upstream graph for AS45102: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS45102Alibaba (US) Tech…This networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3356Lumen (Level 3)AS3491PCCW Global (HK) …AS6453TATA Communicatio…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS49544i3D.net B.VAS24516Virtutel Pty LtdAS58511Swoop (Anycast Gl…AS8220COLTAS32590Valve Corporation

Networks observed one and two hops upstream of AS45102 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

374

adjacent networks

Upstreams
8723%
Peers
28676%
Downstreams
10%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 87.

Upstreams of AS45102
NetworkCountryRelationshipPathsVantage pts
AS6453TATA Communications (America) IncUSPeer14,198145
AS3491PCCW Global (HK) Ltd.HKPeer13,899143
AS1299Arelion (fka. Telia Carrier)SEPeer9,133145
AS2914NTT America, Inc.USPeer8,483130
AS3356Lumen (Level 3)USPeer6,732127
AS21859Zenlayer IncUSPeer3,884145
AS174Cogent Communications, LLCUSPeer3,505138
AS7473Singapore Telecommunications LtdSGPeer2,936121
AS9002RETN LimitedGBPeer2,441118
AS7195EdgeUnoCOPeer2,398139

Prefixes

All 1,276

The largest blocks AS45102 originates, widest first.

Largest prefixes originated by AS45102
PrefixAddressesVisibility
43.100.0.0/15131k81/81
43.104.0.0/15131k81/81
43.106.0.0/15131k81/81
43.112.0.0/15131k81/81
43.120.0.0/15131k81/81
47.56.0.0/15131k81/81
47.236.0.0/15131k81/81
47.238.0.0/15131k81/81
47.242.0.0/15131k81/81
8.208.0.0/1665.5k81/81

Routing health

How AS45102'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

  • Valid99.0%1,263
  • Invalid0.7%9
  • No ROA0.3%4

Propagation

  • Globally propagated90% of full-feed peers or more93.7%1,195
  • Partially propagated40% to 90%2.5%32
  • Seen by few peersUnder 40%3.8%49

Prefix sizes

IPv4 — 1,156 prefixes

IPv6 — 120 prefixes

  • /324.3B × /6420.0%24
  • /332.1B × /6440.0%48
  • /36268M × /643.3%4
  • /37134M × /646.7%8
  • /441M × /642.5%3
  • /45524k × /645.0%6
  • /47131k × /641.7%2
  • /4865.5k × /6420.8%25

Recent changes

Announcements that started or stopped since 28th Aug 2026.

58 announced and 8 withdrawn in all; the most recent are shown.

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