asn.dev

Observed topology

AS18186 NEBULA-GLOBAL - Nebula Global LLC

Hosting DROP-listed space ARIN

Upstreams 27 carry this network
Downstreams 13 this network carries
Adjacent (IPv4) 40
Adjacent (IPv6) 15
Upstream graph Who carries AS18186, and who carries them, drawn as a map up to the transit-free core. 5 exchanges Where AS18186 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 27

Networks observed carrying traffic for AS18186: 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
AS3356Level 3 Parent, LLCTransitIPv4 IPv67,935
AS2914NTT America, Inc.TransitIPv4 IPv67,817
AS7473Singapore Telecommunications LtdUnclassifiedIPv4 IPv64,546
AS3491PCCW Global (HK) Ltd.TransitIPv43,961
AS4637Telstra GlobalUnclassifiedIPv4 IPv63,782
AS6939Hurricane Electric LLCTransitIPv4 IPv63,678
AS54801Zillion Network Inc.UnclassifiedIPv42,691
AS17676SoftBank Corp.MobileIPv4 IPv61,490
AS4635Hong Kong Internet Exchange--Route Server 1UnclassifiedIPv4891
AS17408AboveNet Communications TaiwanUnclassifiedIPv4875

All 27 upstreams →

Transit

Downstream networks

All 13

Networks for which AS18186 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS137535JT TELECOM INTERNATIONAL PTE.LTD.UnclassifiedIPv41,450
AS140227Hong Kong Communications International Co., LimitedUnclassifiedIPv41,129
AS211512Nebula Global LimitedUnclassifiedIPv4694
AS133012Cocoa Oriental Network LimitedUnclassifiedIPv4 IPv6576
AS41717Telfly Technology LimitedUnclassifiedIPv4531
AS63902SHINE TELECOM CO., LTD.UnclassifiedIPv4405
AS401276United Cloud IncUnclassifiedIPv4232
AS4907BGPNET PTE. LTD.HostingIPv4175
AS18427SUSTAINATEGY LIMITEDUnclassifiedIPv4174
AS134997YFNETUnclassifiedIPv4 IPv693

All 13 downstreams →

Adjacency

Adjacent networks

All 41

Every AS seen directly next to AS18186 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv4 IPv610,245
AS3356Level 3 Parent, LLCTransitIPv4 IPv68,822
AS7473Singapore Telecommunications LtdUnclassifiedIPv4 IPv65,578
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv64,503
AS4637Telstra GlobalUnclassifiedIPv4 IPv64,252
AS6939Hurricane Electric LLCTransitIPv4 IPv64,151
AS54801Zillion Network Inc.UnclassifiedIPv42,691
AS17676SoftBank Corp.MobileIPv4 IPv61,490
AS137535JT TELECOM INTERNATIONAL PTE.LTD.UnclassifiedIPv41,450
AS140227Hong Kong Communications International Co., LimitedUnclassifiedIPv41,129

All 41 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-09 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.03M 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.