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AS45102Alibaba (US) Technology Co., Ltd.

United StatesRegistryAPNICTypeContent

As of 11th November 2026, AS45102 (Alibaba (US) Technology Co., Ltd.), a content network registered in the United States with APNIC, originates 1,212 IPv4 prefixes covering 11.2M addresses and 143 IPv6 prefixes. By IPv4 address space that makes it the 65th-largest of the 80,747 networks we see originating IPv4, and the 22nd-largest of 18,752 in the United States. It is seen behind 80 upstream networks, most often AS2914 (NTT America, Inc.) and AS6453 (TATA Communications (America) Inc), and in front of 1 downstream network. Over 99% of its announcements have a valid RPKI ROA; 9 are RPKI-invalid. 93% of its routes reach at least 90% of full-feed peers, and 74 prefixes are also originated by another network.

At a glance

IPv4 prefixes

1,212

IPv6 prefixes

143

IPv4 addresses

11.2M

IPv6 /64s

217B

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…AS13030Init7 (Switzerlan…AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS24516Virtutel Pty LtdAS58511Swoop (Anycast Gl…AS8220COLTAS35280F5 Networks SARL

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

365

adjacent networks

Upstreams
8022%
Peers
28478%
Downstreams
10%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 80.

Upstreams of AS45102
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer13,359126
AS6453TATA Communications (America) IncUSPeer12,206138
AS3491PCCW Global (HK) Ltd.HKPeer11,800136
AS1299Arelion (fka. Telia Carrier)SEPeer8,445139
AS3356Lumen (Level 3)USPeer6,177120
AS21859Zenlayer IncUSPeer4,913133
AS174Cogent Communications, LLCUSPeer3,609133
AS7473Singapore Telecommunications LtdSGPeer3,137116
AS9002RETN LimitedGBPeer2,733110
AS17676SoftBank Corp.JPPeer2,424138

Prefixes

All 1,355

The largest blocks AS45102 originates, widest first.

Largest prefixes originated by AS45102
PrefixAddressesVisibility
43.100.0.0/15131k76/76
43.104.0.0/15131k76/76
43.106.0.0/15131k76/76
43.112.0.0/15131k76/76
43.120.0.0/15131k76/76
47.56.0.0/15131k76/76
47.236.0.0/15131k76/76
47.238.0.0/15131k76/76
47.242.0.0/15131k76/76
8.208.0.0/1665.5k76/76

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%1,342
  • Invalid0.7%9
  • No ROA0.3%4

Propagation

  • Globally propagated90% of full-feed peers or more93.4%1,265
  • Partially propagated40% to 90%3.2%44
  • Seen by few peersUnder 40%3.4%46

Prefix sizes

IPv4 — 1,212 prefixes

IPv6 — 143 prefixes

  • /324.3B × /6417.5%25
  • /332.1B × /6435.0%50
  • /36268M × /642.8%4
  • /37134M × /645.6%8
  • /441M × /642.1%3
  • /45524k × /644.2%6
  • /46262k × /644.9%7
  • /47131k × /6411.2%16
  • /4865.5k × /6416.8%24

Recent changes

Announcements that started or stopped since 12th Oct 2026.

115 announced and 23 withdrawn in all; the most recent are shown.

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