asn.dev

Observed topology

AS33489 COMCAST-33489 - Comcast Cable Communications, LLC

Unclassified ARIN Cable/DSL/ISP

Upstreams 2 carry this network
Downstreams 23 this network carries
Adjacent (IPv4) 25
Adjacent (IPv6) 4
Upstream graph Who carries AS33489, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS33489 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS33489: 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
AS7922Comcast Cable Communications, LLCResidentialIPv4 IPv61,529
AS3356Level 3 Parent, LLCTransitIPv435

Transit

Downstream networks

All 23

Networks for which AS33489 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS14625PGA TourUnclassifiedIPv4232
AS10851St Johns County BOCCUnclassifiedIPv4 IPv6124
AS400952KISS NAIL PRODUCTS, INCUnclassifiedIPv4108
AS13335Cloudflare, Inc.HostingIPv4 IPv690
AS36040Google LLCHostingIPv458
AS54135TEGNA Inc.UnclassifiedIPv458
AS54943Stillwater Insurance Services, IncUnclassifiedIPv458
AS395202Bradford County Board of County CommissionersUnclassifiedIPv458
AS399653Charleston County Aviation AuthorityUnclassifiedIPv458
AS36174Baptist Health SystemUnclassifiedIPv447

All 23 downstreams →

Adjacency

Adjacent networks

All 25

Every AS seen directly next to AS33489 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS7922Comcast Cable Communications, LLCResidentialIPv4 IPv62,340
AS3356Level 3 Parent, LLCTransitIPv4 IPv6255
AS14625PGA TourUnclassifiedIPv4232
AS10851St Johns County BOCCUnclassifiedIPv4 IPv6124
AS400952KISS NAIL PRODUCTS, INCUnclassifiedIPv4108
AS13335Cloudflare, Inc.HostingIPv4 IPv690
AS36040Google LLCHostingIPv458
AS54135TEGNA Inc.UnclassifiedIPv458
AS54943Stillwater Insurance Services, IncUnclassifiedIPv458
AS395202Bradford County Board of County CommissionersUnclassifiedIPv458

All 25 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-10 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 71.97M 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.