asn.dev

Observed topology

AS2152 CENIC-2152 - CENIC

Unclassified RIPE Educational/Research

Upstreams 6 carry this network
Downstreams 147 this network carries
Adjacent (IPv4) 150
Adjacent (IPv6) 38
Upstream graph Who carries AS2152, and who carries them, drawn as a map up to the transit-free core. 6 exchanges Where AS2152 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS2152: 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, LLCTransitIPv46,237
AS2153CENICUnclassifiedIPv4 IPv63,267
AS6939Hurricane Electric LLCTransitIPv4 IPv61,053
AS6461Zayo BandwidthTransitIPv4716
AS11164Internet2EducationIPv4 IPv6666
AS396450Internet2UnclassifiedIPv454

Transit

Downstream networks

All 147

Networks for which AS2152 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS2920Los Angeles County Office of EducationEducationIPv411,027
AS18558Riverside County Office of EducationUnclassifiedIPv4 IPv68,615
AS16509Amazon.com, Inc.HostingIPv44,434
AS22315San Bernardino County Superintendent of SchoolsUnclassifiedIPv43,717
AS23024Orange County Department of EducationUnclassifiedIPv43,630
AS8151UNINETMobileIPv43,546
AS54179Ventura County Office of EducationUnclassifiedIPv43,422
AS395226Sacramento County Office of EducationUnclassifiedIPv4 IPv62,109
AS13335Cloudflare, Inc.HostingIPv41,784
AS11404Wave BroadbandResidentialIPv41,770

All 147 downstreams →

Adjacency

Adjacent networks

All 150

Every AS seen directly next to AS2152 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4592,863
AS11164Internet2EducationIPv4 IPv6169,441
AS6461Zayo BandwidthTransitIPv4 IPv6145,111
AS6939Hurricane Electric LLCTransitIPv4 IPv6137,598
AS2153CENICUnclassifiedIPv4 IPv626,465
AS2920Los Angeles County Office of EducationEducationIPv411,089
AS7922Comcast Cable Communications, LLCResidentialIPv410,228
AS18558Riverside County Office of EducationUnclassifiedIPv4 IPv69,653
AS13335Cloudflare, Inc.HostingIPv48,215
AS3786LG DACOM CorporationUnclassifiedIPv47,847

All 150 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-07 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 72.97M 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.