asn.dev

Observed topology

AS27552 TWDX

Unclassified ARIN NSP

Upstreams 9 carry this network
Downstreams 49 this network carries
Adjacent (IPv4) 58
Adjacent (IPv6) 19
Upstream graph Who carries AS27552, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS27552 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS27552: 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 IPv6311
AS1299Arelion Sweden ABTransitIPv4 IPv6259
AS6939Hurricane Electric LLCTransitIPv4 IPv6149
AS701Verizon BusinessResidentialIPv422
AS9002RETN LimitedUnclassifiedIPv616
AS293ESnetUnclassifiedIPv412
AS33891Core-Backbone GmbHHostingIPv412
AS8359MTS PJSCMobileIPv41
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSCMobileIPv41

Transit

Downstream networks

All 49

Networks for which AS27552 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS64249Charles River OperationUnclassifiedIPv4 IPv62,523
AS55232Zultys, Inc.UnclassifiedIPv42,099
AS22147Open Contributors Corporation for Advanced Internet Development, Inc.UnclassifiedIPv4 IPv6704
AS12161dao Consulting, LLCUnclassifiedIPv4282
AS395213Rapid7 IncUnclassifiedIPv4 IPv6260
AS46155Deerfield AcademyUnclassifiedIPv4220
AS3384Center for Educational Leadership and TechnologyUnclassifiedIPv4174
AS14361HopOne Internet CorporationHostingIPv4 IPv6174
AS398123IRACING.COM MOTORSPORT SIMULATIONS, LLCUnclassifiedIPv4 IPv6173
AS27475Wayfair LLCUnclassifiedIPv4162

All 49 downstreams →

Adjacency

Adjacent networks

All 58

Every AS seen directly next to AS27552 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4 IPv65,106
AS1299Arelion Sweden ABTransitIPv4 IPv63,447
AS64249Charles River OperationUnclassifiedIPv4 IPv62,581
AS55232Zultys, Inc.UnclassifiedIPv42,099
AS6939Hurricane Electric LLCTransitIPv4 IPv61,533
AS22147Open Contributors Corporation for Advanced Internet Development, Inc.UnclassifiedIPv4 IPv6916
AS701Verizon BusinessResidentialIPv4 IPv6420
AS12161dao Consulting, LLCUnclassifiedIPv4282
AS395213Rapid7 IncUnclassifiedIPv4 IPv6260
AS17014North Atlantic Networks, LLCResidentialIPv4243

All 58 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-28 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.21M 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.