asn.dev

Observed topology

AS133199 SONDERCLOUDLIMITED-AS-AP SonderCloud Limited

Upstreams 13 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 16
Adjacent (IPv6) 0

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS133199: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv48,891
AS13335Cloudflare, Inc.HostingIPv42,391
AS6939Hurricane Electric LLCTransitIPv4718
AS133861SonderCloud LimitedUnclassifiedIPv4531
AS21859Zenlayer IncHostingIPv4240
AS17676SoftBank Corp.MobileIPv4236
AS9002RETN LimitedUnclassifiedIPv4101
AS23764CTGNetUnclassifiedIPv494
AS24482SG.GSHostingIPv475
AS18013ASLINE LIMITEDHostingIPv450
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSCMobileIPv446
AS4635Hong Kong Internet Exchange--Route Server 1UnclassifiedIPv430
AS8359MTS PJSCMobileIPv43

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you.

Transit

Downstream networks

inferred

Networks for which AS133199 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS151630Yun Zhong Technology LimitedUnclassifiedIPv4924
AS134696HENGTIAN NETWORK TECHNOLOGY CO., LIMITEDUnclassifiedIPv4431
AS141159Incomparable(HK)Network Co., LimitedUnclassifiedIPv4264

Adjacency

Adjacent networks

16 shown

Every AS seen directly next to AS133199 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv49,410
AS13335Cloudflare, Inc.HostingIPv42,391
AS6939Hurricane Electric LLCTransitIPv41,555
AS151630Yun Zhong Technology LimitedUnclassifiedIPv4924
AS133861SonderCloud LimitedUnclassifiedIPv4667
AS134696HENGTIAN NETWORK TECHNOLOGY CO., LIMITEDUnclassifiedIPv4431
AS21859Zenlayer IncHostingIPv4301
AS141159Incomparable(HK)Network Co., LimitedUnclassifiedIPv4264
AS17676SoftBank Corp.MobileIPv4236
AS9002RETN LimitedUnclassifiedIPv4101
AS24482SG.GSHostingIPv496
AS23764CTGNetUnclassifiedIPv494
AS4635Hong Kong Internet Exchange--Route Server 1UnclassifiedIPv474
AS18013ASLINE LIMITEDHostingIPv450
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSCMobileIPv446
AS8359MTS PJSCMobileIPv44

Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Interconnection

Exchange presence

recorded

Internet exchanges where Packet Clearing House has a port recorded for AS133199, largest fabric first. An exchange is shared switching where networks interconnect directly rather than paying a transit provider to carry traffic between them, so turning up at one is a deliberate choice about how this network wants to be reached. Each name opens that exchange's own page, with its peering LANs and every other network recorded on it. Recorded at 2 exchanges across 2 countries and 1 region.

ExchangeLocationTheir addressMember ports
BroadBand Internet eXchange TokyoTokyo, Japan101.203.89.201359
Hong Kong Internet ExchangeHong Kong, China123.255.91.51307

Unlike the tables above, this is recorded rather than inferred. An address on a peering LAN is at that exchange by definition. Two carve-outs all the same. Member ports counts every participant at the exchange, not this network's ports, so read it as a size proxy. And an absent exchange means PCH has no record of it, not that the network is not there.

Provenance

Where this comes from

Derived from routing tables collected at 2026-08-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.02M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.

Exchange presence comes from a separate dataset: the directory collected 2026-08-08 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,137 recorded member ports, licensed CC BY-NC-SA 3.0.

PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.