asn.dev

Observed topology

AS13335 CLOUDFLARENET

Hosting ARIN

Upstreams 225 carry this network
Downstreams 1,044 this network carries
Adjacent (IPv4) 1,257
Adjacent (IPv6) 241
Upstream graph Who carries AS13335, and who carries them, drawn as a map up to the transit-free core. 247 exchanges Where AS13335 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 225

Networks observed carrying traffic for AS13335: 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
AS1299Arelion Sweden ABTransitIPv4 IPv623,697
AS3356Level 3 Parent, LLCTransitIPv4 IPv618,998
AS174Cogent Communications, LLCTransitIPv4 IPv617,105
AS2914NTT America, Inc.TransitIPv4 IPv613,063
AS6453TATA COMMUNICATIONS AMERICA INCTransitIPv4 IPv612,031
AS3257GTT Communications Inc.TransitIPv4 IPv610,237
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv67,453
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv67,219
AS1403EBOXResidentialIPv4 IPv64,867
AS7018AT&T Enterprises, LLCResidentialIPv4 IPv64,502

All 225 upstreams →

Transit

Downstream networks

All 1,044

Networks for which AS13335 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS135377UCLOUD INFORMATION TECHNOLOGY HK LIMITEDUnclassifiedIPv422,937
AS209242Cloudflare London, LLCHostingIPv4 IPv617,688
AS30103Zoom Video Communications, IncUnclassifiedIPv410,360
AS58791GMO Internet, Inc.HostingIPv410,112
AS6307American Express CompanyUnclassifiedIPv47,552
AS8698BUILDING SOCIETYUnclassifiedIPv46,848
AS270631S.A.UnclassifiedIPv46,553
AS132839POWER LINE DATACENTERUnclassifiedIPv45,877
AS7979Servers.com, Inc.HostingIPv45,672
AS146943Tier 4 Cloud ServicesHostingIPv44,937

All 1,044 downstreams →

Adjacency

Adjacent networks

All 1,257

Every AS seen directly next to AS13335 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4 IPv639,440
AS174Cogent Communications, LLCTransitIPv4 IPv635,134
AS1299Arelion Sweden ABTransitIPv4 IPv631,575
AS2914NTT America, Inc.TransitIPv4 IPv631,507
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv626,522
AS135377UCLOUD INFORMATION TECHNOLOGY HK LIMITEDUnclassifiedIPv422,937
AS6453TATA COMMUNICATIONS AMERICA INCTransitIPv4 IPv622,509
AS1403EBOXResidentialIPv4 IPv617,967
AS209242Cloudflare London, LLCHostingIPv4 IPv617,688
AS22652Videotron LteeResidentialIPv4 IPv617,320

All 1,257 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-26 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M 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.