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AS133199SonderCloud Limited

Hong Kong SAR ChinaRegistryAPNIC

As of 11th November 2026, AS133199 (SonderCloud Limited), a network registered in Hong Kong SAR China with APNIC, originates 305 IPv4 prefixes covering 147k addresses. By IPv4 address space that makes it the 1,724th-largest of the 80,743 networks we see originating IPv4, and the 34th-largest of 760 in Hong Kong SAR China. It is seen behind 21 upstream networks, most often AS2914 (NTT America, Inc.) and AS13335 (Cloudflare, Inc.), and in front of 3 downstream networks. 33% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 68% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

305

IPv6 prefixes

0

IPv4 addresses

147k

IPv6 /64s

0

Upstream graph

The networks AS133199 is seen behind, one and two hops out, drawn from real AS paths.

AS133199Toward the internet core
Upstream graph for AS133199: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS133199SonderCloud Limit…This networkAS2914NTT America, Inc.AS6939Hurricane Electri…AS13335Cloudflare, Inc.AS21859Zenlayer IncAS133861SonderCloud Limit…AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS20130Depaul UniversityAS132337AxclusiveAS3356Lumen (Level 3)AS174Cogent Communicat…AS23764China Telecom Glo…

Networks observed one and two hops upstream of AS133199 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

63

adjacent networks

Upstreams
2133%
Peers
3962%
Downstreams
35%

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

Upstreams of AS133199
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer11,87276
AS13335Cloudflare, Inc.USPeer2,67976
AS6939Hurricane Electric LLCUSPeer1,45069
AS133861SonderCloud LimitedHKPeer1,00375
AS21859Zenlayer IncUSPeer42055
AS18013ASLINE LIMITEDHKPeer3436
AS17676SoftBank Corp.JPPeer31564
AS23764China Telecom GlobalHKPeer2946
AS24482SG.GSSGPeer1383
AS35280F5 Networks SARLFRPeer1202

Prefixes

All 305

The largest blocks AS133199 originates, widest first.

Largest prefixes originated by AS133199
PrefixAddressesVisibility
38.190.192.0/1816.4k76/76
149.30.192.0/1816.4k76/76
149.30.160.0/198.2k76/76
206.119.160.0/198.2k76/76
109.66.112.0/204.1k76/76
169.40.80.0/204.1k76/76
208.87.200.0/212k76/76
43.225.44.0/221k76/76
43.240.28.0/221k76/76
43.242.32.0/221k76/76

Routing health

How AS133199'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

  • Valid32.8%100
  • Invalid0.0%0
  • No ROA67.2%205

Propagation

  • Globally propagated90% of full-feed peers or more67.5%206
  • Partially propagated40% to 90%0.3%1
  • Seen by few peersUnder 40%32.1%98

Prefix sizes

IPv4 — 305 prefixes

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.