Observed topology

AS20258 ANALOG-DEVICES - Analog Devices, Inc.

Unclassified ARIN

Upstreams 12 carry this network

Downstreams 0 this network carries

Adjacent (IPv4) 12

Adjacent (IPv6) 0

Upstream graph Who carries AS20258, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS20258 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 12

Networks observed carrying traffic for AS20258: 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.

AS	Network	Type	Families	Paths seen
AS174	Cogent Communications, LLC	Transit	IPv4	649
AS7018	AT&T Enterprises, LLC	Residential	IPv4	597
AS9498	BHARTI Airtel Ltd.	Mobile	IPv4	239
AS207044	Enet Telecommunications Networks Limited	Residential	IPv4	236
AS4775	Globe Telecoms	Unclassified	IPv4	186
AS702	Verizon Business	Unclassified	IPv4	178
AS132280	Symphony Communication (Thailand) PCL.	Residential	IPv4	132
AS46887	Crown Castle Fiber LLC	Unclassified	IPv4	120
AS9299	Philippine Long Distance Telephone Company	Unclassified	IPv4	69
AS45458	SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX	Unclassified	IPv4	65

All 12 upstreams →

Transit

Downstream networks

inferred

Networks for which AS20258 was observed as the last hop before the origin, meaning it appears to provide them transit.

No downstream observed. This network does not appear to carry transit for anyone.

Adjacency

Adjacent networks

All 12

Every AS seen directly next to AS20258 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS174	Cogent Communications, LLC	Transit	IPv4	649
AS7018	AT&T Enterprises, LLC	Residential	IPv4	597
AS9498	BHARTI Airtel Ltd.	Mobile	IPv4	239
AS207044	Enet Telecommunications Networks Limited	Residential	IPv4	236
AS4775	Globe Telecoms	Unclassified	IPv4	186
AS702	Verizon Business	Unclassified	IPv4	178
AS132280	Symphony Communication (Thailand) PCL.	Residential	IPv4	132
AS46887	Crown Castle Fiber LLC	Unclassified	IPv4	120
AS9299	Philippine Long Distance Telephone Company	Unclassified	IPv4	69
AS45458	SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX	Unclassified	IPv4	65

All 12 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-02 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.44M 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.