asn.dev

Observed topology

AS11878 TZULO - tzulo, inc.

Hosting ARIN

Upstreams 8 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 11
Adjacent (IPv6) 10
Upstream graph Who carries AS11878, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS11878 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS11878: 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
AS6461Zayo BandwidthTransitIPv4 IPv64,772
AS36236NetActuate, IncHostingIPv4 IPv64,275
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv61,422
AS6079RCNResidentialIPv4 IPv6707
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4 IPv6684
AS46844SharktechHostingIPv4 IPv6397
AS32097WholeSale Internet, Inc.HostingIPv4 IPv6327
AS53745Nordklett Inc.UnclassifiedIPv622

Transit

Downstream networks

inferred

Networks for which AS11878 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS397270NetInformatik Inc.UnclassifiedIPv4 IPv6823
AS53745Nordklett Inc.UnclassifiedIPv4262
AS14585CIFNet, Inc.UnclassifiedIPv4 IPv692
AS402977RESEARCHUnclassifiedIPv459

Adjacency

Adjacent networks

All 11

Every AS seen directly next to AS11878 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6461Zayo BandwidthTransitIPv4 IPv65,671
AS36236NetActuate, IncHostingIPv4 IPv64,386
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv61,825
AS397270NetInformatik Inc.UnclassifiedIPv4 IPv61,569
AS6079RCNResidentialIPv4 IPv61,072
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4 IPv6888
AS46844SharktechHostingIPv4 IPv6397
AS32097WholeSale Internet, Inc.HostingIPv4 IPv6327
AS53745Nordklett Inc.UnclassifiedIPv4 IPv6284
AS14585CIFNet, Inc.UnclassifiedIPv4 IPv692

All 11 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-14 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.46M 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.