asn.dev

Observed topology

AS10310 YAHOO-1 - Yahoo Holdings Inc.

Hosting ARIN

Upstreams 70 carry this network
Downstreams 31 this network carries
Adjacent (IPv4) 93
Adjacent (IPv6) 72
Upstream graph Who carries AS10310, and who carries them, drawn as a map up to the transit-free core. 83 exchanges Where AS10310 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 70

Networks observed carrying traffic for AS10310: 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
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv6932
AS6939Hurricane Electric LLCTransitIPv4 IPv6843
AS4637Telstra GlobalUnclassifiedIPv4 IPv6561
AS3356Level 3 Parent, LLCTransitIPv4 IPv6388
AS1299Arelion Sweden ABTransitIPv4 IPv6349
AS7195EDGEUNO S.A.SUnclassifiedIPv4 IPv6237
AS3462Data Communication Business GroupResidentialIPv4157
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6137
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv6123
AS24482SG.GSHostingIPv4 IPv6104

All 70 upstreams →

Transit

Downstream networks

All 31

Networks for which AS10310 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS26101Yahoo Holdings Inc.UnclassifiedIPv4 IPv64,873
AS36647Yahoo Holdings Inc.UnclassifiedIPv4 IPv64,357
AS34010Yahoo-UK LimitedUnclassifiedIPv4 IPv63,024
AS36646Yahoo Holdings Inc.UnclassifiedIPv4 IPv62,703
AS56173internet content providerUnclassifiedIPv4 IPv61,687
AS7280Yahoo Holdings Inc.UnclassifiedIPv4 IPv6869
AS10880Yahoo Holdings Inc.HostingIPv4 IPv6576
AS14778Yahoo Holdings Inc.UnclassifiedIPv4 IPv6575
AS14777Yahoo Holdings Inc.UnclassifiedIPv4 IPv6339
AS36088Yahoo Holdings Inc.UnclassifiedIPv4 IPv6334

All 31 downstreams →

Adjacency

Adjacent networks

All 102

Every AS seen directly next to AS10310 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS26101Yahoo Holdings Inc.UnclassifiedIPv4 IPv64,873
AS36647Yahoo Holdings Inc.UnclassifiedIPv4 IPv64,357
AS6939Hurricane Electric LLCTransitIPv4 IPv63,762
AS34010Yahoo-UK LimitedUnclassifiedIPv4 IPv63,024
AS36646Yahoo Holdings Inc.UnclassifiedIPv4 IPv62,703
AS3356Level 3 Parent, LLCTransitIPv4 IPv62,380
AS1299Arelion Sweden ABTransitIPv4 IPv61,938
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv61,916
AS56173internet content providerUnclassifiedIPv4 IPv61,687
AS4637Telstra GlobalUnclassifiedIPv4 IPv61,384

All 102 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.