asn.dev

Observed topology

AS133199 SONDERCLOUDLIMITED-AS-AP SonderCloud Limited

Unclassified ARIN

Upstreams 13 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 17
Adjacent (IPv6) 0
Upstream graph Who carries AS133199, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS133199 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 13

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.TransitIPv48,785
AS13335Cloudflare, Inc.HostingIPv42,444
AS6939Hurricane Electric LLCTransitIPv4791
AS133861SonderCloud LimitedUnclassifiedIPv4518
AS21859Zenlayer IncHostingIPv4255
AS17676SoftBank Corp.MobileIPv4237
AS9002RETN LimitedUnclassifiedIPv4143
AS23764CTGNetUnclassifiedIPv494
AS24482SG.GSHostingIPv470
AS18013ASLINE LIMITEDHostingIPv455

All 13 upstreams →

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 LimitedUnclassifiedIPv4910
AS134696HENGTIAN NETWORK TECHNOLOGY CO., LIMITEDUnclassifiedIPv4438
AS141159Incomparable(HK)Network Co., LimitedUnclassifiedIPv4244

Adjacency

Adjacent networks

All 17

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

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv49,199
AS13335Cloudflare, Inc.HostingIPv42,444
AS6939Hurricane Electric LLCTransitIPv41,633
AS151630Yun Zhong Technology LimitedUnclassifiedIPv4910
AS133861SonderCloud LimitedUnclassifiedIPv4731
AS134696HENGTIAN NETWORK TECHNOLOGY CO., LIMITEDUnclassifiedIPv4438
AS21859Zenlayer IncHostingIPv4319
AS141159Incomparable(HK)Network Co., LimitedUnclassifiedIPv4244
AS17676SoftBank Corp.MobileIPv4237
AS9002RETN LimitedUnclassifiedIPv4143

All 17 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-30 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.49M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

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. 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.

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